I think that´s about it.The white shirt he had when he was with Orochimaru was probably to not destroy it when he went into Cursed Seal form.Maybe the purple cloth is to maximize maneuvers.It seems to work out for him.Maybe he chose it, not orochimaru?
DR OCTAGANAPUS BLAAAAAAAAAAAAAAAAAAAAAHMaybe he wears it as a sign that his free from orochimaru's grasp?