Not blind, but I had eye surgery about a year and a half ago, followed by a recovery period about 4 weeks longer than I was told to expect, during which I came to appreciate things like contrast. Not coincidentally, I also realized my software was literally* painful to use for someone in my condition.
I have learned to give a shit about color choices.
*That's the literal 'literally', not the figurative one.
Happiness comes from visual variety.