Did People Tint Windows in mid - late 70s?

I had blue tint on my 72 duster, it was a light tint that you could see thru, but it looked cool as hell, if I ever paint the scamp I'll do the windows the same way, The cops never looked twice at the tint because they could see in the car even at night but they would bust my balls on everyting else, ride height, uncaped headers, burnouts, ect.ect.