I sorta have some experience here ... An exgirlfriend accidentally splashed a little paint thinner that had blue paint in it and is caused some light blue tint to be picked up by the SS. I never got around to trying to get it off and eventually traded the car for a house (another story). If car #1255 is on this list, there may be a small blue stain on the lower part of the passenger door. The effect, if I recall correctly, was the light blue SS.