"So if there's a specific part of the wallpaper that you like, say, for instance, the base of the wallpaper is blue, but it's got pink specks in it, then you can say, ‘well, I want that sort of ...

And boom, done. What’s nice is that you can have a different theme or wallpaper for each ‘page’ of games and apps, and when you choose different colors the transition will mix the colors.