While at Lotus this past Thursday I watched a professional put this 3m stuff on the car (aubergine was one of the ones he did that day). Talked with him a bit about it. He said the front end was really tough because of the curves and such. He did an exc. job and you really had to look closely to see the lines.
I also noted, he worked with 12"(?) wide strips, not pre cut pieces. In doing the nose, he appeared to cover the lights as well and then trimmed the the material around the lights where the gaskets were. This gives added protection to the lights.