colr.org has been around since March 2005. It has two purposes:
1) It's a tool to let people fiddle around with colors.
2) It's a jungle gym for software ideas.
Some of nature photos come from freefoto.com.
Some come from the US Forest Service.
Some come from (wow) 2realeyes.com.
The project itself was inspired by:
Email with questions, comments, suggestions
Special thanks to my good friend, caffeine.