I'm a sucker for big book collections, there's something really refined and elegant about them. I'm also attracted to all things bold and colorful. So, organizing books by color is right up alley. I think it probably takes a brave decorating soul to make such a visual splash, but I personally think it's playful and sophisticated at the same time. I don't have the proper bookshelf or the book collection to pull this look off, but hopefully someday.