No. I think skin colour is largely meaningless.
I'm definitely a cultural supremacist though. Some cultures are massively superior to others. Unfortunately that tends to correlate with racial differences sometimes. So people on the far-left go crazy and confuse it for racism (because they confuse everything for racism nowadays)
Cultural supremacy is a far better concept because anyone can choose to adopt a certain culture. It's not exclusionary like racism. No-one's doomed to an inferior fate by the accident of their birth.