fix(web): preserve custom chat backgrounds in dark themes - #6655

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fix(web): preserve custom chat backgrounds in dark themes#6655
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@ohbentosohbentos commented Aug 15, 2026•
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Custom dark themes could not change the main chat canvas because the simplified theme selector lost to the higher-specificity base dark selector.

This restores the dark theme selector so --app-theme-canvas wins and continues to drive --background.

Verification: pnpm --dir apps/web exec vp build

Created with GPT-5.6 Sol using pi.

Note

Low Risk
Single CSS selector change in the theme bridge with no logic or data-path changes; risk is limited to appearance/cascade ordering.

Overview
Fixes custom dark theme chat canvas colors by changing the theme-token bridge selector in index.css from html[data-theme-id] to :root[data-theme-id].

That bridge maps --app-theme-canvas (and other app theme roles) onto semantic tokens like --background. In dark mode, the default :root dark block was winning the cascade over the old html[...] rule, so custom palettes never applied to the main chat background. Anchoring the bridge on :root with the same specificity intent lets those mappings apply after the base dark root tokens.

Reviewed by Cursor Bugbot for commit 9db540d. Bugbot is set up for automated code reviews on this repo. Configure here.

Note

Fix custom chat backgrounds being overridden in dark themes

Changes the CSS selector for the theme variable bridge block from html[data-theme-id] to :root[data-theme-id] in index.css. This increases specificity so custom theme properties correctly override lower-specificity root definitions when a theme ID is present, preserving custom chat backgrounds in dark themes.

Macroscope summarized 9db540d.

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One finding on the theme bridge selector in apps/web/src/index.css. The specificity diagnosis in the PR description is correct; the concern is how the bump is expressed.

Posted via Macroscope — UI Consistency

Comment threadapps/web/src/index.css Outdated
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Verdict: Approved 9db540d

This is a minimal CSS specificity fix changing html to :root selector to ensure theme styles properly cascade. Pure styling change with no runtime behavior impact.

You can customize Macroscope's approvability policy. Learn more.

@ohbentos
ohbentosforce-pushed the fix/chat-theme-background branch from ed1b7d4 to 9db540dCompareAugust 15, 2026 01:33
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Dismissing prior approval to re-evaluate 9db540d

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Updated the selector to :root[data-theme-id], which ties the generated base dark selector at specificity (0,2,0). Because the theme bridge appears later, it wins without reintroducing a raw .dark selector. Verified with pnpm --dir apps/web exec vp build and in the packaged macOS app; the main chat canvas now follows the selected theme background.

@CDVolvikCDVolvik mentioned this pull request Aug 15, 2026
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Same rule as #6663. This one switches html[data-theme-id] to :root[data-theme-id]. That only helps if the theme id lives on :root and the competing dark rule is also on :root. On current main the pair is html[data-theme-id], html.dark[data-theme-id] — 6663's :not([data-theme-id=""]) is the more direct specificity bump.

CONFLICTING. Do not land both.

@shivamhwp

shivamhwp commented Aug 26, 2026

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gpt-5.6-sol on behalf of shivamhwp.

Thank you for addressing custom chat backgrounds in dark mode. We are closing this PR because #6665 has already landed the theme restoration fix in the same web theme path. Main now preserves the selected theme behavior covered here.

The shipped fix makes this branch redundant.

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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fix(web): preserve custom chat backgrounds in dark themes - #6655
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fix(web): preserve custom chat backgrounds in dark themes#6655
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Aug 15, 2026•

edited by macroscopeapp
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Custom dark themes could not change the main chat canvas because the simplified theme selector lost to the higher-specificity base dark selector.
This restores the dark theme selector so --app-theme-canvas wins and continues to drive --background.
Verification: pnpm --dir apps/web exec vp build
Created with GPT-5.6 Sol using pi.
Note
Low Risk

Single CSS selector change in the theme bridge with no logic or data-path changes; risk is limited to appearance/cascade ordering.
Overview
Fixes custom dark theme chat canvas colors by changing the theme-token bridge selector in index.css from html[data-theme-id] to :root[data-theme-id].
That bridge maps --app-theme-canvas (and other app theme roles) onto semantic tokens like --background. In dark mode, the default :root dark block was winning the cascade over the old html[...] rule, so custom palettes never applied to the main chat background. Anchoring the bridge on :root with the same specificity intent lets those mappings apply after the base dark root tokens.
Reviewed by Cursor Bugbot for commit 9db540d. Bugbot is set up for automated code reviews on this repo. Configure here.
Note
Fix custom chat backgrounds being overridden in dark themes
Changes the CSS selector for the theme variable bridge block from html[data-theme-id] to :root[data-theme-id] in index.css. This increases specificity so custom theme properties correctly override lower-specificity root definitions when a theme ID is present, preserving custom chat backgrounds in dark themes.
Macroscope summarized 9db540d.
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One finding on the theme bridge selector in apps/web/src/index.css. The specificity diagnosis in the PR description is correct; the concern is how the bump is expressed.
Posted via Macroscope — UI Consistency
Comment threadapps/web/src/index.css
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Approvability
Verdict: Approved 9db540d
This is a minimal CSS specificity fix changing html to :root selector to ensure theme styles properly cascade. Pure styling change with no runtime behavior impact.
You can customize Macroscope's approvability policy. Learn more.
@ohbentos
ohbentosforce-pushed
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fix/chat-theme-background
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9db540dCompareAugust 15, 2026 01:33
@macroscopeapp
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their stale reviewAugust 15, 2026 01:33
Dismissing prior approval to re-evaluate 9db540d
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Updated the selector to :root[data-theme-id], which ties the generated base dark selector at specificity (0,2,0). Because the theme bridge appears later, it wins without reintroducing a raw .dark selector. Verified with pnpm --dir apps/web exec vp build and in the packaged macOS app; the main chat canvas now follows the selected theme background.
@CDVolvikCDVolvik
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Same rule as #6663. This one switches html[data-theme-id] to :root[data-theme-id]. That only helps if the theme id lives on :root and the competing dark rule is also on :root. On current main the pair is html[data-theme-id], html.dark[data-theme-id] — 6663's :not([data-theme-id=""]) is the more direct specificity bump.
CONFLICTING. Do not land both.
@shivamhwp
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Aug 26, 2026

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gpt-5.6-sol on behalf of shivamhwp.
Thank you for addressing custom chat backgrounds in dark mode. We are closing this PR because #6665 has already landed the theme restoration fix in the same web theme path. Main now preserves the selected theme behavior covered here.
The shipped fix makes this branch redundant.
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
fix(web): preserve custom chat backgrounds in dark themes - #6655
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ohbentos wants to merge 1 commit into
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ohbentos:fix/chat-theme-background
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fix(web): preserve custom chat backgrounds in dark themes#6655
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Custom dark themes could not change the main chat canvas because the simplified theme selector lost to the higher-specificity base dark selector.
This restores the dark theme selector so --app-theme-canvas wins and continues to drive --background.
Verification: pnpm --dir apps/web exec vp build
Created with GPT-5.6 Sol using pi.
Note
Low Risk

Single CSS selector change in the theme bridge with no logic or data-path changes; risk is limited to appearance/cascade ordering.
Overview
Fixes custom dark theme chat canvas colors by changing the theme-token bridge selector in index.css from html[data-theme-id] to :root[data-theme-id].
That bridge maps --app-theme-canvas (and other app theme roles) onto semantic tokens like --background. In dark mode, the default :root dark block was winning the cascade over the old html[...] rule, so custom palettes never applied to the main chat background. Anchoring the bridge on :root with the same specificity intent lets those mappings apply after the base dark root tokens.
Reviewed by Cursor Bugbot for commit 9db540d. Bugbot is set up for automated code reviews on this repo. Configure here.
Note
Fix custom chat backgrounds being overridden in dark themes
Changes the CSS selector for the theme variable bridge block from html[data-theme-id] to :root[data-theme-id] in index.css. This increases specificity so custom theme properties correctly override lower-specificity root definitions when a theme ID is present, preserving custom chat backgrounds in dark themes.
Macroscope summarized 9db540d.
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One finding on the theme bridge selector in apps/web/src/index.css. The specificity diagnosis in the PR description is correct; the concern is how the bump is expressed.
Posted via Macroscope — UI Consistency
Comment threadapps/web/src/index.css
Outdated

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Approvability
Verdict: Approved 9db540d
This is a minimal CSS specificity fix changing html to :root selector to ensure theme styles properly cascade. Pure styling change with no runtime behavior impact.
You can customize Macroscope's approvability policy. Learn more.
@ohbentos
ohbentosforce-pushed
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fix/chat-theme-background
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9db540dCompareAugust 15, 2026 01:33
@macroscopeapp
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Dismissing prior approval to re-evaluate 9db540d
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Updated the selector to :root[data-theme-id], which ties the generated base dark selector at specificity (0,2,0). Because the theme bridge appears later, it wins without reintroducing a raw .dark selector. Verified with pnpm --dir apps/web exec vp build and in the packaged macOS app; the main chat canvas now follows the selected theme background.
@CDVolvikCDVolvik
mentioned this pull request
Aug 15, 2026
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Same rule as #6663. This one switches html[data-theme-id] to :root[data-theme-id]. That only helps if the theme id lives on :root and the competing dark rule is also on :root. On current main the pair is html[data-theme-id], html.dark[data-theme-id] — 6663's :not([data-theme-id=""]) is the more direct specificity bump.
CONFLICTING. Do not land both.
@shivamhwp
shivamhwp
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Aug 26, 2026

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gpt-5.6-sol on behalf of shivamhwp.
Thank you for addressing custom chat backgrounds in dark mode. We are closing this PR because #6665 has already landed the theme restoration fix in the same web theme path. Main now preserves the selected theme behavior covered here.
The shipped fix makes this branch redundant.
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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fix(web): preserve custom chat backgrounds in dark themes - #6655
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Custom dark themes could not change the main chat canvas because the simplified theme selector lost to the higher-specificity base dark selector.
This restores the dark theme selector so --app-theme-canvas wins and continues to drive --background.
Verification: pnpm --dir apps/web exec vp build
Created with GPT-5.6 Sol using pi.
Note
Low Risk

Single CSS selector change in the theme bridge with no logic or data-path changes; risk is limited to appearance/cascade ordering.
Overview
Fixes custom dark theme chat canvas colors by changing the theme-token bridge selector in index.css from html[data-theme-id] to :root[data-theme-id].
That bridge maps --app-theme-canvas (and other app theme roles) onto semantic tokens like --background. In dark mode, the default :root dark block was winning the cascade over the old html[...] rule, so custom palettes never applied to the main chat background. Anchoring the bridge on :root with the same specificity intent lets those mappings apply after the base dark root tokens.
Reviewed by Cursor Bugbot for commit 9db540d. Bugbot is set up for automated code reviews on this repo. Configure here.
Note
Fix custom chat backgrounds being overridden in dark themes
Changes the CSS selector for the theme variable bridge block from html[data-theme-id] to :root[data-theme-id] in index.css. This increases specificity so custom theme properties correctly override lower-specificity root definitions when a theme ID is present, preserving custom chat backgrounds in dark themes.
Macroscope summarized 9db540d.
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One finding on the theme bridge selector in apps/web/src/index.css. The specificity diagnosis in the PR description is correct; the concern is how the bump is expressed.
Posted via Macroscope — UI Consistency
Comment threadapps/web/src/index.css
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Verdict: Approved 9db540d
This is a minimal CSS specificity fix changing html to :root selector to ensure theme styles properly cascade. Pure styling change with no runtime behavior impact.
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Updated the selector to :root[data-theme-id], which ties the generated base dark selector at specificity (0,2,0). Because the theme bridge appears later, it wins without reintroducing a raw .dark selector. Verified with pnpm --dir apps/web exec vp build and in the packaged macOS app; the main chat canvas now follows the selected theme background.
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Same rule as #6663. This one switches html[data-theme-id] to :root[data-theme-id]. That only helps if the theme id lives on :root and the competing dark rule is also on :root. On current main the pair is html[data-theme-id], html.dark[data-theme-id] — 6663's :not([data-theme-id=""]) is the more direct specificity bump.
CONFLICTING. Do not land both.
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gpt-5.6-sol on behalf of shivamhwp.
Thank you for addressing custom chat backgrounds in dark mode. We are closing this PR because #6665 has already landed the theme restoration fix in the same web theme path. Main now preserves the selected theme behavior covered here.
The shipped fix makes this branch redundant.
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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fix(web): preserve custom chat backgrounds in dark themes - #6655
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Custom dark themes could not change the main chat canvas because the simplified theme selector lost to the higher-specificity base dark selector.
This restores the dark theme selector so --app-theme-canvas wins and continues to drive --background.
Verification: pnpm --dir apps/web exec vp build
Created with GPT-5.6 Sol using pi.
Note
Low Risk

Single CSS selector change in the theme bridge with no logic or data-path changes; risk is limited to appearance/cascade ordering.
Overview
Fixes custom dark theme chat canvas colors by changing the theme-token bridge selector in index.css from html[data-theme-id] to :root[data-theme-id].
That bridge maps --app-theme-canvas (and other app theme roles) onto semantic tokens like --background. In dark mode, the default :root dark block was winning the cascade over the old html[...] rule, so custom palettes never applied to the main chat background. Anchoring the bridge on :root with the same specificity intent lets those mappings apply after the base dark root tokens.
Reviewed by Cursor Bugbot for commit 9db540d. Bugbot is set up for automated code reviews on this repo. Configure here.
Note
Fix custom chat backgrounds being overridden in dark themes
Changes the CSS selector for the theme variable bridge block from html[data-theme-id] to :root[data-theme-id] in index.css. This increases specificity so custom theme properties correctly override lower-specificity root definitions when a theme ID is present, preserving custom chat backgrounds in dark themes.
Macroscope summarized 9db540d.
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One finding on the theme bridge selector in apps/web/src/index.css. The specificity diagnosis in the PR description is correct; the concern is how the bump is expressed.
Posted via Macroscope — UI Consistency
Comment threadapps/web/src/index.css
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Verdict: Approved 9db540d
This is a minimal CSS specificity fix changing html to :root selector to ensure theme styles properly cascade. Pure styling change with no runtime behavior impact.
You can customize Macroscope's approvability policy. Learn more.
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Updated the selector to :root[data-theme-id], which ties the generated base dark selector at specificity (0,2,0). Because the theme bridge appears later, it wins without reintroducing a raw .dark selector. Verified with pnpm --dir apps/web exec vp build and in the packaged macOS app; the main chat canvas now follows the selected theme background.
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Same rule as #6663. This one switches html[data-theme-id] to :root[data-theme-id]. That only helps if the theme id lives on :root and the competing dark rule is also on :root. On current main the pair is html[data-theme-id], html.dark[data-theme-id] — 6663's :not([data-theme-id=""]) is the more direct specificity bump.
CONFLICTING. Do not land both.
@shivamhwp
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Aug 26, 2026

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gpt-5.6-sol on behalf of shivamhwp.
Thank you for addressing custom chat backgrounds in dark mode. We are closing this PR because #6665 has already landed the theme restoration fix in the same web theme path. Main now preserves the selected theme behavior covered here.
The shipped fix makes this branch redundant.
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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fix(web): preserve custom chat backgrounds in dark themes - #6655
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ohbentos:fix/chat-theme-background
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fix(web): preserve custom chat backgrounds in dark themes#6655
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Custom dark themes could not change the main chat canvas because the simplified theme selector lost to the higher-specificity base dark selector.
This restores the dark theme selector so --app-theme-canvas wins and continues to drive --background.
Verification: pnpm --dir apps/web exec vp build
Created with GPT-5.6 Sol using pi.
Note
Low Risk

Single CSS selector change in the theme bridge with no logic or data-path changes; risk is limited to appearance/cascade ordering.
Overview
Fixes custom dark theme chat canvas colors by changing the theme-token bridge selector in index.css from html[data-theme-id] to :root[data-theme-id].
That bridge maps --app-theme-canvas (and other app theme roles) onto semantic tokens like --background. In dark mode, the default :root dark block was winning the cascade over the old html[...] rule, so custom palettes never applied to the main chat background. Anchoring the bridge on :root with the same specificity intent lets those mappings apply after the base dark root tokens.
Reviewed by Cursor Bugbot for commit 9db540d. Bugbot is set up for automated code reviews on this repo. Configure here.
Note
Fix custom chat backgrounds being overridden in dark themes
Changes the CSS selector for the theme variable bridge block from html[data-theme-id] to :root[data-theme-id] in index.css. This increases specificity so custom theme properties correctly override lower-specificity root definitions when a theme ID is present, preserving custom chat backgrounds in dark themes.
Macroscope summarized 9db540d.
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One finding on the theme bridge selector in apps/web/src/index.css. The specificity diagnosis in the PR description is correct; the concern is how the bump is expressed.
Posted via Macroscope — UI Consistency
Comment threadapps/web/src/index.css
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Verdict: Approved 9db540d
This is a minimal CSS specificity fix changing html to :root selector to ensure theme styles properly cascade. Pure styling change with no runtime behavior impact.
You can customize Macroscope's approvability policy. Learn more.
@ohbentos
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Updated the selector to :root[data-theme-id], which ties the generated base dark selector at specificity (0,2,0). Because the theme bridge appears later, it wins without reintroducing a raw .dark selector. Verified with pnpm --dir apps/web exec vp build and in the packaged macOS app; the main chat canvas now follows the selected theme background.
@CDVolvikCDVolvik
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Same rule as #6663. This one switches html[data-theme-id] to :root[data-theme-id]. That only helps if the theme id lives on :root and the competing dark rule is also on :root. On current main the pair is html[data-theme-id], html.dark[data-theme-id] — 6663's :not([data-theme-id=""]) is the more direct specificity bump.
CONFLICTING. Do not land both.
@shivamhwp
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Aug 26, 2026

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gpt-5.6-sol on behalf of shivamhwp.
Thank you for addressing custom chat backgrounds in dark mode. We are closing this PR because #6665 has already landed the theme restoration fix in the same web theme path. Main now preserves the selected theme behavior covered here.
The shipped fix makes this branch redundant.
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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fix(web): preserve custom chat backgrounds in dark themes - #6655
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ohbentos:fix/chat-theme-background
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fix(web): preserve custom chat backgrounds in dark themes#6655
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edited by macroscopeapp
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Custom dark themes could not change the main chat canvas because the simplified theme selector lost to the higher-specificity base dark selector.
This restores the dark theme selector so --app-theme-canvas wins and continues to drive --background.
Verification: pnpm --dir apps/web exec vp build
Created with GPT-5.6 Sol using pi.
Note
Low Risk

Single CSS selector change in the theme bridge with no logic or data-path changes; risk is limited to appearance/cascade ordering.
Overview
Fixes custom dark theme chat canvas colors by changing the theme-token bridge selector in index.css from html[data-theme-id] to :root[data-theme-id].
That bridge maps --app-theme-canvas (and other app theme roles) onto semantic tokens like --background. In dark mode, the default :root dark block was winning the cascade over the old html[...] rule, so custom palettes never applied to the main chat background. Anchoring the bridge on :root with the same specificity intent lets those mappings apply after the base dark root tokens.
Reviewed by Cursor Bugbot for commit 9db540d. Bugbot is set up for automated code reviews on this repo. Configure here.
Note
Fix custom chat backgrounds being overridden in dark themes
Changes the CSS selector for the theme variable bridge block from html[data-theme-id] to :root[data-theme-id] in index.css. This increases specificity so custom theme properties correctly override lower-specificity root definitions when a theme ID is present, preserving custom chat backgrounds in dark themes.
Macroscope summarized 9db540d.
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One finding on the theme bridge selector in apps/web/src/index.css. The specificity diagnosis in the PR description is correct; the concern is how the bump is expressed.
Posted via Macroscope — UI Consistency
Comment threadapps/web/src/index.css
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Approvability
Verdict: Approved 9db540d
This is a minimal CSS specificity fix changing html to :root selector to ensure theme styles properly cascade. Pure styling change with no runtime behavior impact.
You can customize Macroscope's approvability policy. Learn more.
@ohbentos
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fix/chat-theme-background
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9db540dCompareAugust 15, 2026 01:33
@macroscopeapp
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Updated the selector to :root[data-theme-id], which ties the generated base dark selector at specificity (0,2,0). Because the theme bridge appears later, it wins without reintroducing a raw .dark selector. Verified with pnpm --dir apps/web exec vp build and in the packaged macOS app; the main chat canvas now follows the selected theme background.
@CDVolvikCDVolvik
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Aug 15, 2026
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Same rule as #6663. This one switches html[data-theme-id] to :root[data-theme-id]. That only helps if the theme id lives on :root and the competing dark rule is also on :root. On current main the pair is html[data-theme-id], html.dark[data-theme-id] — 6663's :not([data-theme-id=""]) is the more direct specificity bump.
CONFLICTING. Do not land both.
@shivamhwp
shivamhwp
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Aug 26, 2026

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Collaborator
gpt-5.6-sol on behalf of shivamhwp.
Thank you for addressing custom chat backgrounds in dark mode. We are closing this PR because #6665 has already landed the theme restoration fix in the same web theme path. Main now preserves the selected theme behavior covered here.
The shipped fix makes this branch redundant.
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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fix(web): preserve custom chat backgrounds in dark themes - #6655
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ohbentos wants to merge 1 commit into
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ohbentos:fix/chat-theme-background
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fix(web): preserve custom chat backgrounds in dark themes#6655
ohbentos wants to merge 1 commit into
pingdotgg:mainfrom 
ohbentos:fix/chat-theme-background
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@ohbentos
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Aug 15, 2026•

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Custom dark themes could not change the main chat canvas because the simplified theme selector lost to the higher-specificity base dark selector.
This restores the dark theme selector so --app-theme-canvas wins and continues to drive --background.
Verification: pnpm --dir apps/web exec vp build
Created with GPT-5.6 Sol using pi.
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Low Risk

Single CSS selector change in the theme bridge with no logic or data-path changes; risk is limited to appearance/cascade ordering.
Overview
Fixes custom dark theme chat canvas colors by changing the theme-token bridge selector in index.css from html[data-theme-id] to :root[data-theme-id].
That bridge maps --app-theme-canvas (and other app theme roles) onto semantic tokens like --background. In dark mode, the default :root dark block was winning the cascade over the old html[...] rule, so custom palettes never applied to the main chat background. Anchoring the bridge on :root with the same specificity intent lets those mappings apply after the base dark root tokens.
Reviewed by Cursor Bugbot for commit 9db540d. Bugbot is set up for automated code reviews on this repo. Configure here.
Note
Fix custom chat backgrounds being overridden in dark themes
Changes the CSS selector for the theme variable bridge block from html[data-theme-id] to :root[data-theme-id] in index.css. This increases specificity so custom theme properties correctly override lower-specificity root definitions when a theme ID is present, preserving custom chat backgrounds in dark themes.
Macroscope summarized 9db540d.
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One finding on the theme bridge selector in apps/web/src/index.css. The specificity diagnosis in the PR description is correct; the concern is how the bump is expressed.
Posted via Macroscope — UI Consistency
Comment threadapps/web/src/index.css
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Approvability
Verdict: Approved 9db540d
This is a minimal CSS specificity fix changing html to :root selector to ensure theme styles properly cascade. Pure styling change with no runtime behavior impact.
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@ohbentos
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Updated the selector to :root[data-theme-id], which ties the generated base dark selector at specificity (0,2,0). Because the theme bridge appears later, it wins without reintroducing a raw .dark selector. Verified with pnpm --dir apps/web exec vp build and in the packaged macOS app; the main chat canvas now follows the selected theme background.
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Aug 15, 2026
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Same rule as #6663. This one switches html[data-theme-id] to :root[data-theme-id]. That only helps if the theme id lives on :root and the competing dark rule is also on :root. On current main the pair is html[data-theme-id], html.dark[data-theme-id] — 6663's :not([data-theme-id=""]) is the more direct specificity bump.
CONFLICTING. Do not land both.
@shivamhwp
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Aug 26, 2026

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gpt-5.6-sol on behalf of shivamhwp.
Thank you for addressing custom chat backgrounds in dark mode. We are closing this PR because #6665 has already landed the theme restoration fix in the same web theme path. Main now preserves the selected theme behavior covered here.
The shipped fix makes this branch redundant.
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