[Groxx]

As a person without color-blindness, but is interested in making it easier for people with: there are a lot of different varieties of color blindness. Obviously you can (and usually should) do things like "use different brightnesses", but it seems to me that this is more solvable by e.g. an OS-level color filter. Something that allows you to compress colors into the range you can see.

Would that be even remotely useful? Are there major problems that I'm not seeing? Is that why I don't see OSes with features like that?

[vegardx]

You can change contrast, brightness and such in most modern OSes, but I'd rather have people take it into account and choose colours wisely. The problem for most colour-blind people is contrast, not the colours them self.

I can't speak for all colour-blind people, but generally OSes have been really good at it, the problem is usually inside the browser window. And making everything look like a unicorn had puked rainbows all over your screen, while making it very readable, is not comfortable.