I'm a little creeped out by the ultra-realistic toys. Unless it's being used as a prosthetic, then I guess realistic would be OK. But otherwise, the very realistic toys conjure up the idea of a dismembered body part, to me. I don't want a realistic vagina or anus as a masturbation sleeve either.
Form should follow function, it's a toy for goodness sake. The manufacturer should be creative even with the colors offered. Dv8 mentioned Bad Dragon, now they really are a creative bunch! As far as color, my preference is for colors starkly in contrast to any natural coloration of myself or my partner. Brilliant Red, Purple, Blue, even Carbon Black but any of the "human flesh colors" no thank you.