AITA for expecting a white actor?

I know I will get a lot of backlash but I need to understand if I'm being racist. So today I went to see Hercules in the theatre in London. It was one of my favourites as a child, specially because of the music. It starts, the muses are amazing, just like in the movie. Then Hercules appears and he's black... I was expecting a white, blond man with muscles so it threw me off... am I being racist? If you say so, how would you feel if the muses were white skinny women? It wouldn't feel right.