I created a lamp for the first project (placies) in Wireless Toys.
The bottom shade houses 10 RGB LEDs (controlled by three knobs and two switches located on a cube off to the side). Each knob is attached to a potentiometer whose value corresponds to the amount of red, blue or green light the LEDs emanate. The switches turn pulse width modulation and blinking on and off.
The shades are casted using Sorta Clear silicone. Below is a close up of the top shade.
The lamp in action:
