Korean Luxeed has recently released a colorful keyboard that allows you to program the color of each individual key according to your current mood. There are a total of 512 available colors, so you can virtually have a different color layout for each day of the week without repeating the same sequence twice. Unfortunately, there is not yet info on pricing or availability.
You can adjust the brightness of the skin and program the skins to “dance” to the music that you feel like playing – your dear keyboard’s night out at the disco. In all, I guess there isn’t much more to ask for from a color keyboard. Adventurists out there, keep an eye out for this one.