What is a Color?, Alice and Martin Provensen, 1967.
Sunday- rainbow of color
Monday - red
Tuesday - orange
Wednesday - yellow
Thursday - green
Friday - blue
Saturday - violet
Sunday - finish it all off with another rainbow of color.
If you want to participate let me know in the comments and I'll add you to the list.
Participants in Color Week:
edit: Hey, I started a flickr group for those of you who don't have a blog! Come join us at Color Week.