I'm not sure what you're arguing here exactly. If you're white you're in the racial majority. If you think having darker skin means someone is "100% quirks and doodads" then obviously I wouldn't want to have to "sell" myself to someone like you because the effort would be futile.
If you don't know a bipolar person I can see your confusion. Knowing a few I can say they quite often do not "fit it" with the norm, even if they are racially similar. Conformity happens on may levels. Racial conformity is an obvious one due to it being visual. Social conformity is a bit less visible but just as "important" in most cases.