I have seen some paint his etched PCB of blue, red, green, etc. and would like to know as they do. Anyone know?
If it is an etched PCB, it is probably spray paint.
I´ve seen some of them at banzai:
http://www.banzaimusic.com/Board-FR4-BLACK.html
http://www.banzaimusic.com/Board-FR4-GREEN.html
http://www.banzaimusic.com/Board-FR4-RED.html
They can be pre coloured, you can spray paint or even use sharpies
http://m.instructables.com/id/Make-Your-Own-Multi-Colour-PCB/
Thanks culturejam, 2t0ne & Night-B for your help!!
pcb stock is available in several color and materials. check ebay under "copper clad" and you can pick some different colors usually