In case the Optimus Maximus is not enough for you, you can touch all colored lights you want with the Jazzmutant lemur. Of course, this is not a keyboard, but a modular graphic interface concept with unique multitouch sensor technology for those into audio.

With the Jazzmutant Lemur, you can make custom graphical control panels like sliders, faders, dials, buttons, even keyboards. I would probably have to be more into the sound-mixing business to know what all this stuff is really for, but if you are interested, feel free to shell out $3000 USD to start your e-music recording business.

Via Born Rich