I like your colors
I created a little color toy that goes out to a web site you specify and retrieves the colors that are used there. It looks though the HTML of the site and through any referenced CSS files. Each color appears as a little circular chit with the hexadecimal color value next to it.
The scanning mechanism uses some regular expressions to search for color values, which are typically stored as a hash symbol, followed by 6 hexadecimal digits. I also have the expression search for HTML color words, in case the web author has memorized them for use in his designs or did something even crazier, like used Frontpage.