I just found this site: http://www.colr.org/
It seems like a more automated way to do some of the color scheming that I've been doing manually. I'd take a digital picture of something I wanted to coordinate, then pick out colors and make rectangle samples of them. In the above site, if you keep clicking to create color scheme from the picture, you eventually get a representation of the colors that you imagined.
Here's an online discussion of the site: lifehacker.com