A person who is not "black" as in "a shade of brown," this person's skin is coal black. This often signifies that there's something supernatural about this person. Will often be combined with other tropes involving an unusual lack of color.
Five hats means that five tropers think it is ready to publish.
You are saying that you think this draft is ready to be published. That means the description is not ambiguous,
it doesn't duplicate an existing trope, there are at least three examples, and the title makes sense.