I finished this project last night. It uses an Arduino UNO to drive the LCD screen The code is written in c++. I bought all the parts and componenents (Arduino, Breadboard, LCD, and cables) from Sparkfun
This little project creates a random RGB value every 0.5 seconds. I use an RGB led to display the generated color, and I use 3 single color LEDs to represent the intensity of each channel (Red, Green, and Blue). If you squint, the color they make should be the same.
Get Source Code HERE
Heres a little video of the netduino doing its things: