@JGoldman10,
If that is what you feel you need to do, then go ahead and do it. Just be prepared to accept any feedback you get for doing so.
If you think you need permission to say something before saying it, then it should probably be reworded or not said.
Maybe if you gave us a better idea of what the situation is all about, we can help you find a way of describing it that would be more generally accepted by people and not need any permissions to be used.
Why do you have the need to label people by their skin tones? Is this for an art class? Are you trying to write a book and describe a character's ethnic skin tones in as few words as possible?