Funny, I was going to build this design in vector format then plug it across to photoshop to get the "glow" feel.
Good start so far! Martijn has hit it on the head though - the orange ties in well. That pic is a very good starting position for a CP. All you have to do is move the rings up to be joystick halos, add 2 button halos and move a few things around and you're not far away!
You could go orange vs blue in the tron spirit - it's a good idea.