Chris Cobb, an artist based in San Francisco, has created an amazing installation in bookshop called Adobe Books- he catalogued every single one of the 20,000 books by color. The project is titled "There is Nothing Wrong in This Whole Wide World". They were arranged by hand over a 10 hour period, and he enlisted the help of 16 volunteers. Such beautiful results, they transformed the bookshop overnight. I love the outcome.