Yes indeed...I have seen pictures of other African-American people with vitiligo, and if you did not know they had it, you would think they were white people. There are many pictures where you can see that Michael Jackson had it. This is an example, if you look on his wrist you can see the spots. Of course he would wear makeup to cover them and have medical treatments so he could look like just one color.
I heard that a psychologist said he was mentally only 10 years old. He definitely had many unresolved issues with his childhood. 