"And you're blue," he grumbles reflexively, gently looking upward to try and catch sight of his bangs. "Ugh. No wonder we're doing basic things first. Anything really impressive and we'd probably have lost our eyes or some nonsense..."

...

"...and it does match..." Still not his colour though. Deciding not to dwell, he presses on into the matter at hand.

Namely figuring out how to get these stupid rocks to change colour (correctly). "Well, at least the pitch seemed to be on to something. Perhaps it involves the subject matter for the spell then?" Other than that, they seemed to have played their notes perfectly as far as his ears could tell.