"If anything he'd turn your hair red before he made you look even more Slytherin," remarked Harry playfully. "You two have fun now." He waved a hand and was off looking around. He didn't really need to buy anything, but he knew this would give the others to see a side of Draco that he'd already seen: the obvious change in the pureblood heir.
If it hadn't been for that, Harry never would have brought Draco here. He shuffled through a few things, knowing he'd try to pay if he did want to buy some, and struck up pleasant conversation with whomever happened to realize who he was.