Big Huge Lab
They have several utlities for you to use. I like the palette color generator. Say you want to create an invitation, party scheme, or decorate with a photo with colors that inspire you. Like this photo I love (courtesy of me from our honeymoon cruise)
I'd love to put the colors in our bedroom to remind me of the fun and relaxing honeymoon we had in Ensenada.
I upload the photo into the color generator of bighugelabs.com/flickr/colors.php
And you get this
Not bad. Try it out yourself. And try these features as well:
Mosaic Maker http://bighugelabs.com/flickr/mosaic.php
and for you Andy Warhol fans....