I've been with white women, black women, latina women and asian women. And I'm betting that not one of these women was "pure" of any race.
I couldn't possibly give less of a shit. Skin color was the last thing I saw. All I saw was a woman whose eyes and smile left me weak at the knees and I knew beyond the shadow of a doubt that I wanted to be as physically close with her as it is possible for two organic life forms to be.
A long time ago scientist discovered there waas not such thing as "race". A group of chimpanzees living in different locations have more genetic diversity than any human group. Ours is simple a matter of culture and cosmetics. I like to refer to the different groups as belonging to different tribes.