A lot of white cars have this problem if you pay close attention. Infact a lot of colors have the problem. The problem has to do with the fact that they hav to use flex agents in the paint for the bumpers, otherwise, they'd flake off in an instant. I notice this most on white cars of any make. It is usually more noticeable in certain lighting.
I have to second the lighting issue on white
I thought 2 of my flares were a wrong color & even guys I work with agreed.
Drove it outside & it all looked good
I will appear different color in different lighting