Lots of people have done it, mine are blue.
The instructions are in the How TO
threads. Theres both changing the color of the dials and for the LED panel. It takes some time and a fair bit of patience, so and extra cluster can be handy, so you can still use your car. :)
The main thing is you have to remove the layer behind the numbers and each location that lights up, and buying colored led lights to replace the stock clear lights.