I worked at a retail bookstore for a year a while ago, and at the time it seemed to me a good organization system. People's eyes & brains are really quick at p

I worked at a retail bookstore for a year a while ago, and at the time it seemed to me a good organization system. People's eyes & brains are really quick at picking out colors, faster than reading names or numbers. (Obviously that's not what bookstores do, but working there made me want it)