There's color issues period throughout the black community.
I've observed dark skinned black women bristling with contempt being completely hostile and vindictive towards high yellow black women.
I've observed boys & girls picking on other dark skinned children because of the tone of their skin.
I don't discount the stories I've heard from dark skin blacks who claim that they were treated - even if it was subconsciously on the guardians part - worse than their lighter toned siblings by their parents or grandparents.
This has culminated over centuries & it would take even longer to completely get rid of, though that's likely to never happen.