Maybe I haven't figure out how to use colourcode right, but when I switch out of free build I lose the color that I had locked/selected. That makes it hard for me to make a color scheme that matches the background of a logo I have. The color scheme designer doesn't have that issue. Otherwise it looks like a nice site for getting color schemes.
http://colorschemedesigner.com/
But now yours has definitely taken that place, with a much better UI/UX.