It is very common for pearl white to not match. This problem is not specific to Tesla. When I had the bumper on my pearl white car (not a Tesla) replaced, the body shop had to blend the paint up the surrounding panels in order to reduce the mismatch. Afterward, the body shop manager showed me that their paint job matched the surrounding panels better than the factory paint job on the front bumper. Also, I recently saw a 2018 Honda Accord in pearl white with mismatch much, much worse than You You's car.