The problem with movies is that when they add a coloured person in most cases it feels out of place because they try to change something that was already written (for example in a comic book).
Just be original put coloured people in as normal characters and not bluntly obvious tokens.
There is plenty of movies out there that do this well even going back to the 70s-80s. Watching some of those i didn't FEEL like FMD a token coloured person was thrown in. They had a role that fit.
Same goes i reverse. If the movie's main objective is to focus on a certain race or whatever as part of the story. i honestly couldn't care less if there was 0 white people in them. Just give us a good movie lol.