from the Ulano website:
View attachment 1746665
and from wikipedia on the Rubilith which works the same:
en.wikipedia.org
From what I understand, photographers use the film with the transparent backing aplied on their work, then cut away the thin red or orange backing and peel it off.
For my badges, and I am SURE they did the same for the film, I remove the transparent backing that is very thick and keep only the thin top colored layer. this gives the same extremely flat look on the finished badges seen on the original:
View attachment 1746666
I have offered to help so many times, I was honestly trying to help as best I could, I don't understand why you never accepted, this was such a unique opportunity to make absolutely screen accurate badges.