I had my windshield replace a year, or so, ago due to a very large rock trying to make it's way into the passenger compartment and here in the US there are two replacement windshields for the VX. One has a strip of blue tinting at the top and the other does not. I don't remember ever seeing anything about bronze tinting. Are you sure the lady has her vehicles right? I've seen that bronze tinting on Lexus', but never on an Isuzu.
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong, it usually turns out to be impossible to get at or repair."
-Douglas Adams, Mostly Harmless