I find certain features beautiful, but not sexually attractive. I had a black girl as a model once, and spent hours geeking over her skin tone and trying to paint it in a way that would do justice to the dark chocolatey feeling that you got looking at her. But even though I find her skin color aesthetically very pleasing, I could not be sexually attracted to her because of it : I like very pale girls and/or light brown "métisse" girls (don't know how to translate that word in a non-offensive way, keeping the french term which isn't racially charged).
Does that make me racist? I think not.