Homebrew PCBs

I don't bother either, but Pulsar has a white film that irons on over
black toner to give you a white silkscreen.  I suppose you could use
the blue press-n-peel the same way.

When I do do a silkscreen, I usually just go with black.

http://www.delorie.com/pcb/liquidtin/board-silk.html
http://www.delorie.com/pcb/liquidtin/