Racism exists even among Black Americans. Those with darker skin, especially the women, resent lighter-skinned women, and claim that they are less authentically Black, which they are, at least genetically. But lighter-skinned women have greater appeal with White audiences, so they are more successful. Beyonc? is the best example of this, but there are others, like Vanessa Williams the ex-Miss America.
On the other hand, for some reason, darker-skinned actors like Wesley Snipes, seen to have more appeal than lighter-skinned ones, like Sinbad.
You will find rather a lot about this by googling the word "color-struck". There is a whole sequence about this in Spike Lee's film "School Daze", which has a verbal dance number between the 'Wanabees' and the 'Jigaboos'.
In Haiti, this phenomena is even more prevalent, it seems.