Based on a piece of fanart I absolutely loved.
Galinda walked across the Shiz University grounds, waving at her old friends and smiling her 100 watt smile. Stares followed her everywhere and people gaped as she passed.
Her best friend muttered from beside her, "This in never going to work, Galinda. All that will happen is you will get ridiculed, lose your popularity, and expect me to let you cry on my shoulder."
"Oh, Elphie," Galinda said brightly, "this is going to work, don't be such a downer."
She was right. Much to Elphaba's amazement, most of the students had painted their skin emerald green by the next day.