While admiring this beautiful book installation by Anouk Kruithof (she installs it differently in each new location), it struck me that this is an awesome concept for a DIY bookshelf project.  We are always ordering books on a shelf by the color of size of their spines.  And sometimes we will flip them around to show the page side for an all-white display.  But why not paint the page side and use your bookshelf as a canvas…create a geometric pattern, an hombre effect, or an random watercolor effect.  Have fun!