You can't do that. Blacks can't keep their color behind close doors. I mean that is just who they are. You can see a black man or a white and say if he is either black or white. You can not however look at a man and say if he is gay or not for sure(I mean even some straight guys wear speedos and have a lisp)
Anyway see what I am saying? One(being black is race) and being gay is an act you hopefully do behind closed doors.