The Hat seemed almost to smile mischievously. You are not really a blood purist, it said, a statement of fact that he didn't bother to deny to a mind-reading Hat. It was right, he'd only said that out of acquired habit, an insult he wore like a shield. You pretend because it suits you to have Draco Malfoy and Theodore Nott consider you an acceptable associate. You want to wear green because they are already there, because your cousin Daphne is looking at you right now wondering why it is taking so long ...