I have a 2-layer PCB ready to order. It has silk screen on both sides. Is there a layer of insulation over the copper before the silkscreen? Or do you screen directly on the PCB and wiring? I am guessing "Green" means the layer painted over everything except where solder goes, but just checking... :) BTW, I did hand-routing before I discovered auto-route. Sigh. But, I like my hand route better, because it has fatter lines for things that make sense (like power). Anyway, amazing system, took some work to get to know how to use it, but WOW, I am IMPRESSED!