I want to use the type of vinyl wrap they put on cars and buses for advertising purposes, but on my home windows. I'd design a pattern for it that was very busy and geometric. I do not want to use blinds, curtains, roman drapes, gauze, anything at all on the interior to control the light or privacy. I am resisting using mirrored window film because, just like in a car, if the street outside is dark at night and I turn on an interior light, people can see in as clear as day. Does decorative wrap have this same characteristic or does it control privacy better than mirror film?