Except that nobody is "white" and nobody is "black". We're all just different shades of brown, from very dark to very pale.
Brown is actually a dark yellow. Many people of European ancestry would be considered pink, making them light redskins. (Until they spend some time in the sun.) Albinos would be an extremely light shade of pink, and I don't think they tan very well.
I've seen angry Orientals turn kind of a funny shade of orange. (Time for a comment about a former POTUS?)
As for coloration of aliens and comic characters . . . blue, green, it's all racist of course.
Like everything else.