Suggestion: supporting NO_COLOR environment variable

[Ptival]

While color is great when you want it, it can be annoying when you don't.

https://no-color.org/

This manifesto suggests supporting a NO_COLOR environment variable that disables all color codes when set.

I think it'd be neat to officially support it.

[mylesbartlett72]

This could be as simple as an option for colorama to "do nothing" and let scripts use os.getenv, although I don't see why it would be too hard for colorama to add in support.

[tartley]

There is a languishing PR, which I aim to merge imminently... #230

[thetasine]

I implemented this in 5 seconds under Windows:

if os.getenv('NO_COLOR'):
        colorama.init(strip=True, convert=False)       

[nocnokneo]

Similarly for FORCE_COLOR and/or CLICOLOR_FORCE