B. Except as otherwise provided in this article or permitted by federal law, it shall be unlawful for any person to operate any motor vehicle on a highway with any sign, poster, colored or tinted film, sun-shading material, or other colored material on the windshield, front or rear side windows, or rear windows of such motor vehicle. This provision, however, shall not apply to any certificate or other paper required by law or permitted by the Superintendent to be placed on a motor vehicle's windshield or window.