Because a black cloak and pointy hat might have sent Joanie into shock, she's keeping it real in this shirt, these sweats, and these clogs.
Her skin is the color it is in this icon, though her lips are green too. (I had a hard time making them green in photoshop without them turning out super bad looking.) All the surfaces in her body are tinted green - up the nose, in the ears, the tongue, tonsils, throat, everything. The whites of her eyes are still white. Her blood is still red, so when she blushes or flushes her skin turns a brownish color.
Currently, her face has some streaks of white makeup and blue lipstick because she is king of bad coverups.