Curiously, why do you think that? IMO and from decades of observation, one thing almost every person who identifies as black or any part part thereof knows, is that the stronger or heavier your Negroid phenotype is, the more sensitive you either are or may eventually become to physical racial identity. Unfortunately, a lot of so-called black people tend to carry this mindset throughout their entire life, cheating themselves by allowing others to define who they are. Even more disturbing, many of these same folks appear to devote a lot of their time, energy and money trying to un-black themselves through plastic surgery, chemical and topical treatments, marriage, social association, professional positioning, and the like. Sometimes, it is what it is.