I don't think many people care if these adjustments are legal simply because there is no enforcement. Here in BC, tinting your windshield or front side windows

I don't think many people care if these adjustments are legal simply because there is no enforcement. Here in BC, tinting your windshield or front side windows is illegal, tons of people do it anyway. You're supposed to have a license plate in the front, lots of folks here don't do that either. No one cares because police doesn't enforce any of the rules.