Yellow paper is what I use taped over paper thru printer, traces are now on yellow paper. Lay it carefully over copper clad board, tape it down and send thru Apache roughly 8 times.
Lay copper clad board with only traces on it now down and tape Green TRF to copper clad board and repeat thru laminator. Traces are now green.? ? ? ? ? ? ? ? ? ? ? ?E-Bay sells it, as does Amazon.com.