book design by color

this past weekend, i had a ton of aunts and uncles visiting the city as part of a last-minute sibling reunion. when my aunt ellen was at my apartment, we were talking about blogs, and she asked me if i had ever seen designmom's post on bookshelf design by color. then yesterday, i was flipping through this month's issue of InStyle Magazine, and in the back, there's a great feature on this very idea. i'm unsure whether or not i'd want to do this with my own books, but do think it would add great punch to a room. what do you think?