'67 rear bumper bracket color

[Too Many Projects]

As I was blasting dirt and rust off these bumperette brackets, this emerged and appears to be a silver paint. Where these silver from the factory ?





So now I am wondering about the rest of them. The center bracket did appear to be black, but the rest had 3 layers of paint and rust and I didn't really see anything of a base color.





Thanks for any help/insight on this.