I got popped for that once. Had driven for years with tint on the side windows. One night, cop in a car pulled me over and gave me a tint ticket. Told me to go home and remove the tint that night, blah blah blah. Of course I didn’t and there was a 30 day period to comply. About a week later a motorcycle cop is pulling onto the freeway while I’m getting off and does a U-Turn and pulls me over. Ends up being the same cop who proceeds to give me a $500 (in 1990) illegal operation charge.
I went to court (since Illegal operation required a court visit) and the judge threw out the illegal operation charge. Actually the judge seemed perturbed that we were both in court over tint and told the cop to stay as he wanted to speak to him after.
By then I had already removed the tint and found a cop near the courthouse to sign my ticket. Done for $10, but what a PITA for some tint.