Sky can speak for himself, but just to clarify, I suspect this is a linguistic hangup rather than any kind of conscious or subconscious differentiation. I think, and I could be completely wrong, that Bahasa Indonesia, like Malay, has unique grammatical rules for "black man" (orang hitam "man black" or orang kulit hitam "man skin black") relative to "white man" (mat salleh, "mad sailor") or "yellow man" (orang cina, "man China"). In that its only for people of African descent that the specific skin colour is part of the term for that person. I'm sure he meant no offence, either way.
I barely speak either language so I'm probably way off, though.