I mean, aside from the fact that I haven't seen a black elf ever in any game/movie/book/etc. (now I won't act like ive seen,read, played everything so I could be wrong)...its just implemented so...wrong.
You can't just slap black on a white man and be like "there ya go, representation of race!" No black hairstyles? No black facial features? No black facial hair? Black people aren't just white people with dark skin. It looks extremely bad, and is a bit insulting rather than representative.