Funny, I was just thinking about this the other day. I love most colors, but am very picky about pinks and greens.
Pinks - I like blush, coral pinks, and fuschia, but hate Pepto/Barbie pinks.
Greens - I like emerald, lime, turquoise, teal, olive, and kelly green - hate muddy sage, yellow-greens and for some unknown reason I have a real problem with hunter green.
And there's a shade of brownish orange that is just awful.