My family owns Tint-Tech, Inc. in the Houston/Baytown area. To answer your questions about using two layers of tint film (i.e. limo black-out with bronze on top)... Yes, it could be done, although the adhesive works best on glass as recommended by the manufacturer, and black-out is 'rubber tire' dark (blocks out all but 5% of light transmission)... sooooo dark, that the bronze wouldn't show at all, it would be too black. Wax or clear coated? Could be silicone coated. Since the car would be exposed to the elements, you could use exterior quality film with scratch resistant surface and it would probably last 5-10 years depending on exposure... not a bad idea, if your goal is to remove and change colors every few years anyway. However, the car could not be completely 100% covered with film... you'd have to back off 1/4" - 2" away from all extreme bends and folds on body panels like at gaps between the panels, or inside door jambs and wraps around bonnet into trunk space, etc. Heat guns work fine for gradual bows on window glass, but the adhesive wouldn't last when folded around contours more than 90 degree angles. Clear hood saver (instead of bug shields) aren't applied over peak-lines in the hood, it would lift or bubble. The chrome tape that is used on bottom panels along the tar zone isn't wrapped around to bumpers, or inside door jambs either. Easy to strip? Yes and no, depends on how it was applied, and whether or not it's removed with the sweating process or sauna effect. Once the film has served it's purpose for protection it can be removed or replaced, and it is possible to recover right over the previous layer if changing color or covering damage from road debris provided that the adhesive is still good. Feel free to e-mail me privately if you were serious about doing this to your car and want more info about who to contact. Personally, I think that stain or paint would look better unless it's a similar gray or silver film since you would only get 99% coverage. I understand your reasons for a temporary 'coat' instead of permanently altering original ss panels, but why not just repair or replace them instead? Just my opinion : ) Ron & Cheryl