I think PPG makes the bmw green glass. Most places call it green glass.

I would shop and see if you can get that with the rain sensor. Out here in Salt Lake City, Utah windshield places grow on trees.

I also have non bmw or ppg green glass on my 545i. I really can not tell the difference. And it has held up fine since it was installed in 5-2010. I did not know any better and I let the insurance company steer me to the shop.

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2004 E60 545i Sport 6MT. Black/Black Build Date 6-2004 102k miles