Update cli.py - Change Color Blue to Increase Visibility

[zadevhub]

The color blue is not visible on a terminal with a black background which is a very common configuration. See the attached screenshot.

[svlandeg]

Hi! There's something I don't understand about your screenshot: why are the words in blue from the help texts more visible (brighter in the screenshot)? Like the __init__.py, why is it not rendered in the same blue? (you also didn't edit it in this PR)

[zadevhub]

Yes, that is something that I could not figure out too (which is why I haven't edited it in this PR)
But overall the issue is on a dark terminal that selection of blue is not visible

[zadevhub]

Hi, just checking if anything else is needed from my side. I think for the time being (until it is figured out why blue text appears dark / illegible on a black background), all instances of blue can be replaced with bright_blue or something lighter.