Homebrew PCBs

Hi,

I was thinking about getting a roll of that Pulsar TRF paper soon and 
was wondering about a couple things if anyone here is familiar with 
it.

I mainly needed the white one for doing "white on black" panel 
labeling (Digi-Key has white and green). The green is sold for 
protecting and cleaning up traces before etching, but they don't 
specifically say that the white is not. A Pulsar rep. said the white 
is thicker and may clog closed areas on PCB "lettering", but can be 
removed via Scotch tape or something. Not to sound cheap, but has 
anyone tried using the white for copper?

And more importantly, I've been having decent success with the Staples 
brand paper, but it does leave a really thin, grey film on the toner. 
Do you think this would kill the TRF's ability to coat the print?

                          -Thanks!
George

PS- In case you're wondering why I don't just ask Pulsar, I emailed 
them a while back with some other questions and the guy was real 
helpful and responded right away. I told him I would go ahead and get 
the foil from Digi-Key, but I'm sort of embarrassed that I haven't 
ordered it yet. ;)