Page shows one of nineteen trillion simple maps of the United States, will show a different map the next time loaded.

A well-known theorem proves that with only four colors, any simple map of can be drawn so that no color touches itself. The next step is to ask how many ways there are to accomplish this simple task. For the contiguous United States, there are over nineteen trillion different maps that use only four colors. Even the tightest constraints can yield near-infinite variety.

average color of the sky, updated every 5 minutes

If only I'd known graph coloring was so cool!

ca. 2001: Every house in Palo Alto photographed. Photographs are cross referenced by date, street name, season and averaged to give a color palette for Palo Alto.

random signals: white, pink, red, gray.

The last 97,400 photos (and growing) in this stream are slowly changing blocks of color. Watching at 1 pic a sec, it will be a 27 hr movie, slowly shifting from green -> grey -> blue -> green -> black. (Could be more colors in there...)