This is almost as thoughtful as Slack enumerating all user skin tones via 5 integer values.
Especially on the Internet, with pseudonymity, we're all nothing more than the ideas we present.
An egalitarian dream was twisted into a woke nightmare for bad actors to earn free PR by pitting people against each other.
The point is, once you move past the skin, all our blood looks alike. We all share that.
(I agree, though, that some are likely to insist on taking offense. Also, I note that albinos might have a case to complain about non-albinos who are called "white"...)
Letting people pick whatever color seems more empowering to me.