Why do East Asian characters usually have pink nipples in hentai, but in real life they’re often brown? /u/IlluminatingEmerald No such thing as stupid questions

Often in hentai, explicitly Asian characters are given pink nipples. But from my research IRL Asian nipples tend to be brownish. Why is this the case?

Often in hentai, explicitly Asian characters are given pink nipples. But from my research IRL Asian nipples tend to be brownish. Why is this the case?