"Well, I don't see anything about an ugly dress," Neville returned, flipping to the chapter on what different colors meant when they appeared prominently in a dream. His next observation was, he felt, an astute one.
"But purple sometimes means rank and dignity... so maybe there's something in your dream about being a Prefect?"
Neville knew if he were burdened with the badge he'd certainly dream about it, if and when he managed to sleep.