[jwpeddle]

My eyes are pretty messed up. Red and green look the same and I can't definitively tell dark blue from grey from purple. However I have no trouble with the default bootstrap buttons.

That said, I find the most helpful thing people can do is add icons or other effects completely different from colors. Because of my difficulty with colors, even ones I can "see" I have to concentrate on. Icons let me skip that.

[DigitalJack]

I'm with you here. An overlayed pattern can be very helpful.