I've painted clear plastic before. That's relatively easy. But to do red? I found it impossible to mix reds and get them to look transparent. Everything looked way too dark and muddy. What I ended up going was painting the entire tablecloth, using Liquin in with the oil paints. Liquin helps oil paints dry a lot quicker.
Once the tablecloth was dry, I was able to do a thin wash of red with Liquin. I think it turned out pretty well.
One of the striking things about the red cellophane was the pink shadow it cast on the tablecloth. It took some figuring-out to do on this one.
That's another vintage tablecloth from my collection. They're all from garage sales I've visited over the years. Glad the mice haven't found them yet!