I've had guys compliment me on my nail polish before. It made me wonder if they notice when a girl has on an unattractive nail polish color, as well.
For example, do you think it's ugly when girls wear bright nail polish colors? I'm dark skinned and have yellow nail polish and sky blue nail polish sitting around, I haven't put it on though because I don't know if those colors will look too bright and unattractive on my fingers.
My boyfriend loves my hands and is always holding them and kissing them so he often notices my nail color. And whenever I paint my nails, he always asks to see what they look like when I'm done and he compliments them.