the search for red gel

William asked where to get red film or gel for a computer screen. I explained that I had a few sources and materials: thin medium red cellophane from Michaels; deep red layered slightly-translucent film from Guy; deep red clear gelatin film from a small theatre company. I also explained that I was hoping to find a vendor or manufacturer who would sell us a large amount. Which I would then offer to members in small lots at reasonable prices. A group buy, effectively.

He took it upon himself to find some sources. And he reported back to me. I don't know if he bought some for himself or if he expects me to get some... At any rate, I have a few leads to follow up on.