Graceful learned about Roy G. Biv in kindergarten and her art has never been the same since. Whether she's working with crayons or markers, she starts each project by sorting her colors by Roy G. Biv:
She does the same thing with her school supplies, so that a look into her pencil box would show her colored pencils arranged in rainbow spectrum. I'm guessing the only reason she hasn't done this with her bookshelf is that her books are sorted by author.
She is SO my child.