It's basically the same as making clear translucent buttons. And actually the casting plastic without dye is actually slightly amber. I have made a modification to the buttons that should make them look beter, I'm just waiting for them to set up. I just happen to only have blue dye right now. And the white led is the route I have gone, so if I ever change my face color, I only need new buttons. My plan with a kit is to supply white leds, resistors needed, and choice of color later. The knob board will be offered separately. As soon as I get the results on the buttons I like I will post pricing info.