Dejah was surprised to hear that revelation about her skin. So it was a rarity? A quality unique to her. "And...your father saw this as a sign of a curse and not some sort of divine message?" That is how it would have been seen on Barsoom - well, so long as it wasn't green. Green meant Tharks, and Tharks were dangerous.

She listened as Elphaba explained the background of the book, her eyes wide with wonder. "So, you can read this, then?" She must be able to, if this evil woman intended to use her to control this Oz of hers.