Question to Crystal White Pearl Effect Driver

Hello, last week I picked up my T8 in o.a. color. It was a service car from Volvo from Cologne. The dealer (Volvo) confirmed to me a paint repair in the bumper area (back) in the course of the preparation (nothing wild). There is also not to be seen. At the pick-up I also noticed nothing else in the delivery hall. Today (after a few days of rain weather) I see in the left wheel box area: 1. A yellow shimmering area above the wheel bar (coating wings). and. 2. that the entire wheel bar is clearly darker. I hope you can see this on the pictures. If someone has a clue as above all the point 1 could have come about. At point 2 I can only imagine that the bar has been completely changed and here color softens come to wear. However, with the latter I see no reason why the friend should hide this from me. Thank you for your help!