Green with Envy
Envy comes from a place of dissatisfaction and desire; we want what we don't have. The Wicked Witch of the West covets Dorothy's shoes as she travels about Oz trying to find her way home. Playing on the expression "having a monkey on your back," the Wicked Witch's experience with the sin of envy is literally a monkey perched on her shoulder, which displays the burden of her envious feelings. While she grasps the crystal ball revealing her desire for Dorothy's ruby slippers, the Witch has begun to transform. From the nose up, she is wicked; from the nose down, she is slowly beginning to personify qualities she craves.