I’ve been snuffling around in my archives, dusting off long-forgotten back-up CDs and such, and found an interesting wee toy I’d almost forgotten writing.
There are four colour-able areas. You fill them by clicking a colour from the panel on the left, and then in one of the colour-able areas. A cookie will save the scheme you decided on, and CSS codes for the color are given.
Who knows, it may be useful, but probably more likely a 5-minute diversion. Have at it!