That's an interesting question, actually. "Negroid" is not an even remotely "demeaning" term; gosh, it's just a scientifically-correct Ethnographic Delineation.
HOWEVER, when it comes to general discussion, I'd think it kinda silly for you to refer to me as "OP the Caucasoid". I am, ethnographically, a "Caucasoid"; but in common parlance "OP the White Guy" will do just fine, thanks. ;-)
Make any sense?
In general? Nope.
I generally don't use the term; I just prefer "black" over any other label - of course, the operative term being American.