Willow was tired of standing out with her white hair. Also, now that she was back with Oz, she wanted to be the Willow he remembered. Honestly she'd just forgotten it was there. So, she sat down on the floor, in her meditation position, and concentrated. A moment later, her her was it's natural bright red again, the way it had always been, and flowed out behind her, reaching her bum. Standing up, she bounced over to the mirror to check her reflection, and grinned when she saw her hair red again.