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Android Grayscale Toggle

This is a minimal and straightforward application to toggle the grayscale color correction setting on Android devices.

If the application doesn't have permission to change system settings, it will show instructions on how to do it with ADB. Otherwise, launching the app toggles the setting. This application is helpful with launchers such as Niagara Launcher, where you can define an action for a home screen button, or with devices with a designated function physical button, like Unihertz phones.

Manyarticlescoverwhyhaving your smartphone screen in grayscale is a good idea. However, sometimes it's helpful to switch to full color in case you need to open a navigation app, or if you want to see a picture you got from a message, or if you're showing your phone screen to another person.

Installation

Get the APK from the releases page. Then, install it on your phone.

Granting Permission to the App

  1. Ensure you have ADB installed and configured on your machine. Please take a look at the official ABD page.
  2. Connect your phone to your computer and allow USB debugging.
  3. Open a terminal and run: 
    adb shell pm grant vc.ivan.grayscaletoggle android.permission.WRITE_SECURE_SETTINGS

That's it. Opening the app will toggle the grayscale mode.

License

See LICENSE © Ivan Valdes

About

A simple application that toggles the grayscale color correction

Topics

androidandroid-appandroid-applicationsmartphone-addiction

Resources

Readme
MIT license
Activity

Stars

11 stars

Watchers

1 watching

Forks

1 fork
Report repository

Releases

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
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;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
GitHub - ivanvc/android-grayscale-toggle: A simple application that toggles the grayscale color correction · GitHub
Skip to content
BranchesTags
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Logo
Android Grayscale Toggle
This is a minimal and straightforward application to toggle the grayscale color
correction setting on Android devices.
If the application doesn't have permission to change system settings, it will
show instructions on how to do it with ADB. Otherwise, launching the app toggles
the setting. This application is helpful with launchers such as Niagara
Launcher, where you can define an action for a home screen button, or with
devices with a designated function physical button, like Unihertz phones.
Manyarticlescoverwhyhaving
your smartphone screen in grayscale is a good idea. However, sometimes it's
helpful to switch to full color in case you need to open a navigation app, or if
you want to see a picture you got from a message, or if you're showing your
phone screen to another person.
Installation
Get the APK from the releases page. Then, install it on your phone.
Granting Permission to the App
  1. Ensure you have ADB installed and configured on your machine. Please take a
look at the official ABD page.
  2. Connect your phone to your computer and allow USB debugging.
  3. Open a terminal and run:

    adb shell pm grant vc.ivan.grayscaletoggle android.permission.WRITE_SECURE_SETTINGS
That's it. Opening the app will toggle the grayscale mode.
License
See LICENSE © Ivan Valdes
About
A simple application that toggles the grayscale color correction
Topics
androidandroid-appandroid-applicationsmartphone-addiction
Resources
Readme
MIT license
Activity
Stars
11 stars
Watchers
1 watching
Forks
1 fork
Report repository
Releases
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - ivanvc/android-grayscale-toggle: A simple application that toggles the grayscale color correction · GitHub
Skip to content
BranchesTags
Repository files navigation
Logo
Android Grayscale Toggle
This is a minimal and straightforward application to toggle the grayscale color
correction setting on Android devices.
If the application doesn't have permission to change system settings, it will
show instructions on how to do it with ADB. Otherwise, launching the app toggles
the setting. This application is helpful with launchers such as Niagara
Launcher, where you can define an action for a home screen button, or with
devices with a designated function physical button, like Unihertz phones.
Manyarticlescoverwhyhaving
your smartphone screen in grayscale is a good idea. However, sometimes it's
helpful to switch to full color in case you need to open a navigation app, or if
you want to see a picture you got from a message, or if you're showing your
phone screen to another person.
Installation
Get the APK from the releases page. Then, install it on your phone.
Granting Permission to the App
  1. Ensure you have ADB installed and configured on your machine. Please take a
look at the official ABD page.
  2. Connect your phone to your computer and allow USB debugging.
  3. Open a terminal and run:

    adb shell pm grant vc.ivan.grayscaletoggle android.permission.WRITE_SECURE_SETTINGS
That's it. Opening the app will toggle the grayscale mode.
License
See LICENSE © Ivan Valdes
About
A simple application that toggles the grayscale color correction
Topics
androidandroid-appandroid-applicationsmartphone-addiction
Resources
Readme
MIT license
Activity
Stars
11 stars
Watchers
1 watching
Forks
1 fork
Report repository
Releases
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - ivanvc/android-grayscale-toggle: A simple application that toggles the grayscale color correction · GitHub
Skip to content
BranchesTags
Repository files navigation
Logo
Android Grayscale Toggle
This is a minimal and straightforward application to toggle the grayscale color
correction setting on Android devices.
If the application doesn't have permission to change system settings, it will
show instructions on how to do it with ADB. Otherwise, launching the app toggles
the setting. This application is helpful with launchers such as Niagara
Launcher, where you can define an action for a home screen button, or with
devices with a designated function physical button, like Unihertz phones.
Manyarticlescoverwhyhaving
your smartphone screen in grayscale is a good idea. However, sometimes it's
helpful to switch to full color in case you need to open a navigation app, or if
you want to see a picture you got from a message, or if you're showing your
phone screen to another person.
Installation
Get the APK from the releases page. Then, install it on your phone.
Granting Permission to the App
  1. Ensure you have ADB installed and configured on your machine. Please take a
look at the official ABD page.
  2. Connect your phone to your computer and allow USB debugging.
  3. Open a terminal and run:

    adb shell pm grant vc.ivan.grayscaletoggle android.permission.WRITE_SECURE_SETTINGS
That's it. Opening the app will toggle the grayscale mode.
License
See LICENSE © Ivan Valdes
About
A simple application that toggles the grayscale color correction
Topics
androidandroid-appandroid-applicationsmartphone-addiction
Resources
Readme
MIT license
Activity
Stars
11 stars
Watchers
1 watching
Forks
1 fork
Report repository
Releases
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
GitHub - ivanvc/android-grayscale-toggle: A simple application that toggles the grayscale color correction · GitHub
Skip to content
BranchesTags
Repository files navigation
Logo
Android Grayscale Toggle
This is a minimal and straightforward application to toggle the grayscale color
correction setting on Android devices.
If the application doesn't have permission to change system settings, it will
show instructions on how to do it with ADB. Otherwise, launching the app toggles
the setting. This application is helpful with launchers such as Niagara
Launcher, where you can define an action for a home screen button, or with
devices with a designated function physical button, like Unihertz phones.
Manyarticlescoverwhyhaving
your smartphone screen in grayscale is a good idea. However, sometimes it's
helpful to switch to full color in case you need to open a navigation app, or if
you want to see a picture you got from a message, or if you're showing your
phone screen to another person.
Installation
Get the APK from the releases page. Then, install it on your phone.
Granting Permission to the App
  1. Ensure you have ADB installed and configured on your machine. Please take a
look at the official ABD page.
  2. Connect your phone to your computer and allow USB debugging.
  3. Open a terminal and run:

    adb shell pm grant vc.ivan.grayscaletoggle android.permission.WRITE_SECURE_SETTINGS
That's it. Opening the app will toggle the grayscale mode.
License
See LICENSE © Ivan Valdes
About
A simple application that toggles the grayscale color correction
Topics
androidandroid-appandroid-applicationsmartphone-addiction
Resources
Readme
MIT license
Activity
Stars
11 stars
Watchers
1 watching
Forks
1 fork
Report repository
Releases
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - ivanvc/android-grayscale-toggle: A simple application that toggles the grayscale color correction · GitHub
Skip to content
BranchesTags
Repository files navigation
Logo
Android Grayscale Toggle
This is a minimal and straightforward application to toggle the grayscale color
correction setting on Android devices.
If the application doesn't have permission to change system settings, it will
show instructions on how to do it with ADB. Otherwise, launching the app toggles
the setting. This application is helpful with launchers such as Niagara
Launcher, where you can define an action for a home screen button, or with
devices with a designated function physical button, like Unihertz phones.
Manyarticlescoverwhyhaving
your smartphone screen in grayscale is a good idea. However, sometimes it's
helpful to switch to full color in case you need to open a navigation app, or if
you want to see a picture you got from a message, or if you're showing your
phone screen to another person.
Installation
Get the APK from the releases page. Then, install it on your phone.
Granting Permission to the App
  1. Ensure you have ADB installed and configured on your machine. Please take a
look at the official ABD page.
  2. Connect your phone to your computer and allow USB debugging.
  3. Open a terminal and run:

    adb shell pm grant vc.ivan.grayscaletoggle android.permission.WRITE_SECURE_SETTINGS
That's it. Opening the app will toggle the grayscale mode.
License
See LICENSE © Ivan Valdes
About
A simple application that toggles the grayscale color correction
Topics
androidandroid-appandroid-applicationsmartphone-addiction
Resources
Readme
MIT license
Activity
Stars
11 stars
Watchers
1 watching
Forks
1 fork
Report repository
Releases
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - ivanvc/android-grayscale-toggle: A simple application that toggles the grayscale color correction · GitHub
Skip to content
BranchesTags
Repository files navigation
Logo
Android Grayscale Toggle
This is a minimal and straightforward application to toggle the grayscale color
correction setting on Android devices.
If the application doesn't have permission to change system settings, it will
show instructions on how to do it with ADB. Otherwise, launching the app toggles
the setting. This application is helpful with launchers such as Niagara
Launcher, where you can define an action for a home screen button, or with
devices with a designated function physical button, like Unihertz phones.
Manyarticlescoverwhyhaving
your smartphone screen in grayscale is a good idea. However, sometimes it's
helpful to switch to full color in case you need to open a navigation app, or if
you want to see a picture you got from a message, or if you're showing your
phone screen to another person.
Installation
Get the APK from the releases page. Then, install it on your phone.
Granting Permission to the App
  1. Ensure you have ADB installed and configured on your machine. Please take a
look at the official ABD page.
  2. Connect your phone to your computer and allow USB debugging.
  3. Open a terminal and run:

    adb shell pm grant vc.ivan.grayscaletoggle android.permission.WRITE_SECURE_SETTINGS
That's it. Opening the app will toggle the grayscale mode.
License
See LICENSE © Ivan Valdes
About
A simple application that toggles the grayscale color correction
Topics
androidandroid-appandroid-applicationsmartphone-addiction
Resources
Readme
MIT license
Activity
Stars
11 stars
Watchers
1 watching
Forks
1 fork
Report repository
Releases
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
GitHub - ivanvc/android-grayscale-toggle: A simple application that toggles the grayscale color correction · GitHub
Skip to content
BranchesTags
Repository files navigation
Logo
Android Grayscale Toggle
This is a minimal and straightforward application to toggle the grayscale color
correction setting on Android devices.
If the application doesn't have permission to change system settings, it will
show instructions on how to do it with ADB. Otherwise, launching the app toggles
the setting. This application is helpful with launchers such as Niagara
Launcher, where you can define an action for a home screen button, or with
devices with a designated function physical button, like Unihertz phones.
Manyarticlescoverwhyhaving
your smartphone screen in grayscale is a good idea. However, sometimes it's
helpful to switch to full color in case you need to open a navigation app, or if
you want to see a picture you got from a message, or if you're showing your
phone screen to another person.
Installation
Get the APK from the releases page. Then, install it on your phone.
Granting Permission to the App
  1. Ensure you have ADB installed and configured on your machine. Please take a
look at the official ABD page.
  2. Connect your phone to your computer and allow USB debugging.
  3. Open a terminal and run:

    adb shell pm grant vc.ivan.grayscaletoggle android.permission.WRITE_SECURE_SETTINGS
That's it. Opening the app will toggle the grayscale mode.
License
See LICENSE © Ivan Valdes
About
A simple application that toggles the grayscale color correction
Topics
androidandroid-appandroid-applicationsmartphone-addiction
Resources
Readme
MIT license
Activity
Stars
11 stars
Watchers
1 watching
Forks
1 fork
Report repository
Releases
Used by
Contributors
Languages