sadly its not complete :/
sbsar file is missing
I would love an SBSAR file. I can't export one myself, since I don't have Substance Designer.
I exported a .sbsar from SD but I don't see a color change parameter. I'm new to SD, perhaps I exported incorrectly?
Looks good. But I would love to see a .sbsar included.
The material is still a bit incomplete. There is no normal data, which is why you're going to get the artifacting. You may also want to try adding a control for the amount of grunge there can be on the glass. This gives the material more utility over many more scenarios.