I guess it depends... If the woman I'm with has a black bush, I love black. If the woman has a red bush, I love red. If the woman has a brunette bush, I love brunette. Etc, etc.
My preference is for none. But color doesn't matter, I love them all. But if I had to pick one, a nice firebush would be very pleasing to the eye.
I dated a red head once and hers was a light red. I thought that was so sexy! My wife's is a sandy brown color and I have no complaints. Actually I have no complaints about any color