My best is purple. Or maybe I just love a deep purple, so I pretend it's my best.
OK, I also look good in pink, and in black. And in pink and black. And in gray, especially heather gray.
I look OK in a royal blue, but it's not my best.
But seriously, I have blue veins, look better in silver, and have green eyes with blonde hair. Definite cool.
Oh, and I just looked at the one Tracey posted--duh, there are greens in the cool, too. So it's not notable that I look good in some greens, but not others.