Hi @walkingkeys - I had a similar circumstance last year. I'm a white older guy who works as a magician and mind reader mostly for white crowds in the midwestern US. I was hired for a private party last year for an African American group.
I started out a little bit nervous at the get-go, but guess what? As it turns out, black folks like magic, mind-reading, and my jokes that go along with 'em just like white folks! I tried to connect with people, and not worry about the amount of melanin in our skin. I did "regular me" because that's the only shtick I know! It turned out to be a fantastic show!