What is the name for someone that wants to be a different race. Like for example if I wanted to be black but I am white what would be the name for that.I saw a post like this and I didn't get a clear answer so I thought I would ask myself.
I think you can use the popular catch all self-identify which means:
To believe or assert that one belongs to a certain group or class
(American Heritage Dictionary)
There is a person who "self-identifies" as black despite being of non-black descent. Wikipedia article on her is here.
So you could say you "self-identify" as black. Alternatively, you could describe yourself simply as "envious" of features of a particular race (or culture).