The color of the sky changes through the day and into the night and there are subtle differences every day with clouds, pollution, etc. Mike Bodge use this idea in N SKY C, a project with a simple concept. Take a picture with a webcam of the New York City sky every five minutes, take the average color, and post it to the site. N SKY C is the result. Roll over grids to see the picture that was taken.
I think someone did this a while back, but the project and artist names escape me. He or she used a smaller grid so that you could see more at once. I think I'd like that format better for this project, too, but still kinda fun.
There's a cyan-colored section around the middle. Either the webcam was having color adjustment issues or NYC went into dreamscape mode. Not sure which.
[N SKY C | Thanks, Doug]