W110, tinting front window.....

[Idle]

I am old enough to remember when you could buy a car with untinted windows. Tinted glass was an option on the W110 and good examples are hard to find.

But I have come across a front and rear window that are in almost perfect shape. But they came from a low end diesel and the original owner cheaped out to the point of not even buying a radio. This means a four speed and clear glass on all the windows.

So... Is there a process where the glass can be tinted to look like the original tinted glass? Not a film but more of a chemical process or a light green paint?

I seem to recall such a process from the 60's for those who bought a used car with clear glass and wanted it tinted. I can't find anyone doing this today.

Anyone know of such a service?