ADDITION:
I just did a quick test trying to see if I could get good results from trying to map the colors of RedMenace’s reconstruction onto the eBay seller’s shots of the 16mm print. Results were nice! Here are some results. The order goes: 16mm, RedMenace CC, 16mm matched to RMCC.
The results aren’t perfect by any means, but I’m sure an actual scan of the print would make it much easier. I also wasn’t able to screencap the exact frames, but I hope it gives you an idea of the colors that can be achieved.