  Walking over Harry noticed that there was large couch, it seemed to fit five or six and two arm chairs. Rose had left a considerable gap next to her but, though Harry hadn't spent much time around her, Harry decided he didn't want to sit next to her or his "family'. Instead he walked over to the red and gold armchair and waved his wand muttering an incantation that turned the chair green and silver. Dumbledore was slightly impressed, they didn't teach colour changing spells until second year, and changing furniture would be easily late third year.