I don’t know what you mean by no blacks... Darth Vader only comes in black.
He meant blacks as in people like Lando Calrissian (though to be fair, Vader’s voice actor WAS black, but he wasn’t actually credited).
“Darth Vader only comes in black.”
Vader was an Oreo. Black on the outside, white inside. Even used the voice of James Earle Jones, but he was a white guy. They made it a point in one of the early movies to have a storm trooper remove his helmet and behold: a black dude. Billy Dee Williams was a character in a subsequent movie. He has since been turned into the token LGBTQWERTY character.