to be fair, I think breasts are sexualized (although they shouldn't be).
Think about all the women that get shyt for breastfeedinign in public. (Why is it an issue?) Rihanna got her IG account temp suspended because she had pics with her nipples showing. (And people reported her). Yet no men (afaik) have gotten their accounts suspended for posting topless pics.
But to be on topic,
Are there some dark skinned women getting looked over because their skin color? Yes
Are there some dark skinned women getting looked over because they're ugly? Yes
When Lil Wayne said "bytch would look better red" I'm sure there are some men that agreed with that sentiment.
But if a guy doesn't like me because I'm dark skinned, it's not my loss.