Color doesn't sound too bad. I have the worst organizational system, I organize books by size. This is more because I keep having problems with bookshelves wher

Color doesn't sound too bad. I have the worst organizational system, I organize books by size. This is more because I keep having problems with bookshelves where the shelves bow. So the heavier and larger books need to go towards the bottom and the paperbacks near the top. That said within the shelves I tend to order by author.