Okay, mine were the rings around the actual lights.
I have put some chrome finish around my brake vents though that might be relevant. It is less that a tenner at Halfords and comes with some 3M double sided sticky strip to fix it.
The challenge of bending it around the curves without it folding over is best overcome with lots of preheating with a heat gun and trying to get ot to sit flat on the floor while still curving.
The next challenge is getting the two ends to join nicely. Unfortumately I don't have any tips for that one
