Thanks more good info
I thought that SEM only made a paint (not dye), in which case everything you said confirms what I would expect.

Of course if vinyl dye does not exist then everything is a paint no matter what it is called. Hence my question on that - I'm with you that I would have thought you can't dye vinyl as it is non-porous, which is why I posted after finding statements like
"VHT's Penetrating Color Dye is not paint, but a true dye that permanently changes or restores the original color."
and " (Varikote)penetrates into the surface and bonds itself to the molecules changing the pigmentation. Is a dye and not paint".
etc etc.


Yeah I have gone back and forth on the new top - but for now a new glass curtain (shipped to the UK don't forget $$$$$$$$ ) is unaffordable. If it looks feasible then in a sense I may have nothing to lose by trying the dye - unless it looks poor very quickly.