The site doesn't explain--what's the actual point of this? If we are seriously concerned about characters (which is generally silly in a gzipped CSS) why not just use 3-char hex like #a5c?
> Splash colours can help you avoid decision paralysis when picking colours. It's an emotional tool that stops you fussing around— trying to pick the "perfect" colour … It also means the user can deal with discrete / individual colour values in the drag-and-drop user interface. They don't have to deal with large numbers at all. Only one to nine