MAC does the make-up for the nearby musical Wicked - the untold story of the witches of Oz. Which tells the story what happened before Dorothy dropped in.
So in every MAC store they have the face charts for the green witch exposed.
I think the eyes are quite nice done. If you're not going too much neon green, it could be your next every day look:
|pic via http://wickedthemusical.com.sg|