Homebrew PCBs

just got back from office depot with some of their house brand inkjet 
transparency material. also got some translucent vellum used for making 
fancy greeting card inserts with inkjets.

i'm going to make up some test patterns with a fineline serpentine next to a 
fineline interwoven to act as open/short test patterns. i'm then planning to 
step and repeat this on a page so i can try different colors on the 
patterns. finally i'm planning to do this with a 1-8 interval exposure test.

any recommendations on any of these phases? any suggestions on color 
selection? i was going to try straight hp primaries (red, yellow, blue) and 
black. i also saw green mentioned which would be a yellow/blue mix i guess.

of course i'll post results.

tnx
jim