Black magicians?? Yes, there are plenty. I've had the pleasure to see Ice McDonald lecture this past year, and it was one of the most informative lectures I've seen in quite some time. Not the tricks, but his advice on the business side of things. Well worth the price 10 times over for sure.
I'm also currently performing with a black magician, Reggie Rice. He dresses VERY sharp, and if you think of Will Smith doing magic, you'll get Reggie. Some people have funny acts, but few are actually funny. Reggie in genuinely funny and puts on a kick ass show too, I might add.