Via digg [thanks to Kevin for telling me about the Web site! ]:

I Like You Colors:
Type the URL of a page below and submit it to see what colors it uses

Some people complained that the idea is lame. Admittedly, it does not require rocket science to extract such information from CSS files, but it’s a neat idea to simplify the process. I wish I had known this before I did a lot of dirty work to list “colors used” on my credits page.