I ordered the pressure film today. I should have it by Friday.

They are going to send me a digital color chart which we can post and participants can scan a picture, take a picture for comparison.

Alternatively, and I would probably do this if I get enough people, is send the samples back to the company and get an in depth digital analysis of each test(Not quite ready to spring for the full Monty test equipment- $12,000) But the company analysis is quite reasonable if the qty is large enough.