The Colorful Library of an Interaction Designer (Juhan Sonin) / 20100423.7D.05887.P1 / SML
Believe it or not, I met Juhan Sonin three years ago on librarything.com, a social media site for book lovers. LibraryThing has an interesting feature which compares similarity of libraries and Juhan came out as in my top 3 list.
Organizing books by color is definitely a first - I must try this some time!
Compare our libraries - though clearly Juhan's is much bigger!