I have never understood this matter, but they do put far too much emphasis on skin color. Yet it is just skin and not hair, at least that I have observed. I haven't seen any significant differences that seem to coincide with the changes in skin color other than language. Although humans seem to use whatever excuse they can in order to marginalize others who they do not perceive as equal.
Do you mind if I ask you a few questions? I have quite a few and I believe it would be proper if I asked you first rather than burying you in them from the start.