"That's where it gets fun," she said with a small smile. "I can turn something from gray to blue, but there's thousands upon thousands of different blues to choose from, and I can make every thread just slightly different from the last, if I put my mind to it." She waved a hand. "That's not what I normally do, though, when I change things. I keep it simpler in the day-to-day. But when I was angry at my father, or sad about my mother...it's something to concentrate on, that I can control. Do you know what I mean?"