Just bought a 40th, with a catch

WELL ZED

Hey all,

So I just bought this 40th, so excited to be a Z owner, let alone a rare Z. After purchasing the car, I did some thorough cleaning and realized that the front bumper is a different color than the original. It almost looks purplish and I cant believe I didnt notice this when I was checking out the car. The carfax came back clean, no salvage or accident issue. Super well maintained in the interior and under the hood based on the service records provided to me and stated on the carfax. I asked the owner about this and he denies having changing the bumper or the color. I realized shortly after that there is even a bulge in the bumper that is very hard to see but I tried to get a good angle ( under the 2nd rivet). Even one of rivets looks shifted.

Pictures available here: Imgur: 40th Z