"Huh?"

"I tried floating a thing and hit Willow with it."

"Oh." Pause. "Well at least you got it into the air? I assume?"

"Yeah, into the air and at my head."

"But that's still, you know – almost floating? It at least probably got lift?"

"What else should I try?"

"… You could try doing the floating better? Or – I haven't actually read the books, I don't know what things there are apart from, uh, colour change or something?"

"Colour change is transfiguration, and—" He turns blue.

She giggles. "That is so unfair."

"But can you do it to me? Or my bag?"

"I could try! I think I'll stick to your bag, though."

"You can turn it back after, though, right?"

"In theory, yeah."

"… What colour are you thinking of?"

"Dunno. Blue?" He turns back to his normal colour.

She looks at her bag, which is currently a plain brown.

"… Don't make it too bright and sure, go ahead."

He touches the bag, frowns a bit, and says, "Colovaria!"

...and it is now bright orange with red specks.

"Huh," says Thea. "Is this just another mishap or did you do that intentionally?"

"I did not do that intentionally."

"It's really not my style," says Thea, biting her lip a little. "Do you know if it's permanent?"

"I think you have to untransfigure it but, erm, I dunno how."

"… I can probably ask a teacher when we get there."

"Or you could ask a prefect?"

"A what now?"

"Like, a group of pupils from each house? From the upper years? Who look after first years and stuff?"