Yes, he’s black. I think most of his victims were black.
https://en.wikipedia.org/wiki/Samuel_Little
For being such a “smart” guy he sure got caught a lot. His mugshots remind me of my kids’ school photos taken every year.
He seems to darken the skin of most of his victims, but, in most of the drawings, their hair and facial features do not immediately indicate that they are Black - not to my eye, anyway.