Rear Suspension Parts - Finish Questions

Thanks guys.
Grump, I was LMAO with the beer comment!
I guess I still need to research my own car and look for signs of paint, or lack of. It apprears my shock plates are natural as are the U bolts, but the leaf springs look like factory black. I found some blue and white inspection marks on the diffy,a nd a number in yellow stencil.
I know the different plants used different finishes, and this is an LA built car. That plant seemed to be most different from the rest.

Thanks again for all the help and the links,
George