Trouble snickered at Liam's lack of trust. Instead, she took the glass back and shrugged. "You really have so little faith in me. It wounds me to the soul. If only you had trusted me, then your hair would've gone back to normal. Guess you'll have to be wonderfully purple for the rest of the day." With that, she pulled out her wand and charmed the juice away. Weither there was actually a potion to turn his hair back to normal or not was a secret that no one else would ever know.
"Probably at least a bit. It's why I'm in Slytherin after all. She reached over and tugged one of his violet locks.