A company called H. Sands in Titusville Fla. makes "real" photographic sensitizing dyes at about $100 / teeny tiny bottle of about 100 mg - 1 g depending on th
PE- Sands must not like me as much as they like you! I paid $150/gram bottle plus a hefty "convenience fee".
Chlorophyll from spinach really did not pan out that well for me. I may return to it someday. I did get a kinda - sorta panchro-ish emulsion combining the chlorophyll with a red dye extracted from beetles. So much mess, I might as well have made my own gelatin from raw cow skin.