We’d imagine that they won’t give the true reason for the Wicked Witch Of The West’s green skin transformation. Although we just saw the move, and the only indication is possibly she turned green from a scorned heart as she was in love with the Wizard Of Oz who ended up having a thing for Glinda the good witch. When her sister the Wicked Witch Of The East was shown in her true, non-glamoured, form she was hideous, and deformed devoid of the green skin. In the real world that reason is the result of calling upon demons for power. To learn about real life green skinned witches click here for our article on the subject.
Update: We saw the movie, and it was spectacular. A very interesting storyline along with being a visually dazzling production. It’s the story of a carnival con-man magician, with no real powers, from Kansas thrust into the magical world of Oz where the residents believe him to be the great wizard of prophecy meant to save them from the wicked witch which turned out later to be two wicked witches. The belief the good citizens of Oz had in the Wizard made him believe in himself. Enough so as to tap into his talent of trickery to create a plan to trick the witches into thinking he was all powerful. He, and his new friends of Oz, ended up driving the witches away until we see them again in the original Wizard Of Oz movie. You can watch Oz The Great And Powerful Online here.