Working more on expanding MGM Oz, one of the things that makes it very different from Wicked is that there's absolutely no reason for anyone to think that the Witch being green is weird, because all of the Winkies are green.
If anyone's the outcast over in MGM Winkieland it's the MGM Witch of the East (who's name I might change, I just made it another anagram of Almira but I want something more distinctive) who despite being the version that first coined the two wicked witches as sisters (they're unrelated in the books) has frequently been characterized as plae and blonde
Like, what is up with that? Are they half sisters? Step-sisters? Is she just an albino Winkie? XD
Still deciding, so watch this space :)