Yeah I thought the same too when we first picked up the car but I dont believe it has. When you look at it in a certain lighting it can give off that appearance - the panels on these cars dont always reflect the same - the bumpers do the same thing on all FDs - they have a different tint to them in certain lights.

The body shop we brought it to last week said the only thing they see thats been repainted is the front bumper - quarter panels havent. Either way it doesnt matter, its going into the body shop in a couple weeks when we get the 99 Spec bumper in - everything is going to be repainted cause we want it to be immaculate inside and out.