My guess is that if you look really hard, you can find someone who doesn't want to dance with you because of your color. (Or your religion, or your National Origin.)

My guess is that some of the oldest dancers still have these predjudices.

However, dance discrimination is far more likely due to your hight, or your looks, or your weight.

If you smell bad, people will not want to dance with you.

Most importantly, if you can dance well, most people will want to dance with you.

Beleive me, if you can lead a woman around the floor, you will have plenty of partners.