I need as light a tint for the rear door windows in an Expedition as possible. I am working on a film, and we need be able to light the scene through the windows with the windows rolled up. My dealership only gives me the options of buying "Privacy Glass" which i belive is factory standard and "Solar Tint". They do not know how much light either of these let trough, tint usually comes in percentages, 70% lets 70% percent of light through etc. Does anyone know what the difference is between those options, and does anyone know where is anywhere I could get clear windows, og even just with same "Green tint" as the front windows have?