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Color when water is on windshield

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Weird observation of water on windshield and glass roof.

At different viewing angles, both outside and inside car, I catch a hint of redish purple color.

The color closely matches transmission fluid. I haven't attempted to capture it digitally and can only assume it is caused by the light refraction and the UV shielding.

When a bit of snow and ice are present, the outside view often causes a double-take, thinking what is that fluid in the water droplets.

Anyone else notice this same phenomenon ?

Then again...I just might be going crazy :)
 
It's the UV coating - much more noticeable on the X because of the expanse of glass.

uv coating rain.jpg