Well I got a knob pcb from Stu the other day (very nice by the way) I assembled it that night but didn't get a chance to install it into the empeg untill last night...along with a FireFox31 knob I put a blue filter behind it for the color. The lens is really green one from FiIener I'm not shure why it looks like a smoke one in the pic. I made the buttons myself with my dremel and some clear silicone... and blue filters over the leds, this way I can change the color when I get tired of it.