Seat belt buckles

[starrider]

I have a 72 camaro with standard black seat belts. I had them restored. When I got them back I was surprised that they painted the plastic parts of the receptacles . Is that the usual way they are typically restored? I could tell immediately they were painted. They are more of a flat or at the most a medium like 60% gloss. I would appreciate any advice . They did say they would take them back and replace them with non restored buckles. They said they have been doing it that way for 30 years. Thank you