Factory is factory have your bill of sale in hand when going to court.
I have mine tinted to one level over illegal in MN Troutly stay away

the legal tint in MN is a friggin joke.
I I always roll down at least the drivers window in bad weather. If at night I always stopp under a street lamp. Period. I know several officers and they do like it when the window or windows are open BEFORE they walk up to hte car. Makes them know they can see you.
Also its not a red car thing. My cutlass is red.
I know Illinios is real bad on tinted windows.
Take your bill of sale and a statement from the selling dealer.