TO OP: Some find it uncomfortable that the Prophet (صلى الله عليه و اله وسلم ) was "asmar", as if he wasn't an Arab...others will accuse you of "asabiyya" if you point out how dark skinned many hashimis were, this is present even more amongst darker skinned Muslims who from my experience have a mythical image of the Prophet seeing him as the Christians see Jesus son of Mary, ie as a white skinned man.