Sorry to revive this once again - but I finally got our Sterling Gray C-Max tinted. When I got it back, and drove it home, I noticed black tape, that is practically invisible on the OUTSIDES of the rear window, and rear quarter windows, bordering the dots on the glass. I didn't know why he did that, so I called up and asked, and he explained that the margin between the film and the end of glass (especially with the dots present) shows up as a silverish gap. And this black tape - to them - was the best approach that conceals this gap.He said they use this method on a lot of cars, especially Fords. The guy is very reliable and experienced, so I trust him in a way. Yet I am sort of befuddled also, and want to pursue this more as I do not want a tape, however unnoticeable, on the outside of the car. It will catch dust, and might even fade out. It is offered with Lifetime warranty, so I am not concerned about the fade, just the aesthetics of a tape on the outside of the glass. My wife did not notice it, until I pointed it out to her. I noticed all the cars in here with tints on, and I cannot see any black tape anywhere. Have you heard of this being even an issue with you all? Thanks, and glad to be a member in here finally. Been a lurker for a while!