Personally, I don't think it's like asking to change the race of a character in a TV show, unless you fantasize about taking the character's place. It's common knowledge that people often enjoy playing a character that is like themselves in some ways, such as their race. There isn't anything inherently racist about that, which should be self-evident. That being said, you have every right to create a game where the character's narrative is tied to the color of their skin, nothing wrong with that either.