Copper wire discoloration?

2004 home electrical panel in garage. Any ideas what would cause the copper to tarnish? Dampness of garage?

I don’t see an issue with it…Normal copper oxidation.

Looks copper colored to me

wasn’t the bright copper usually seen.

How old is the panel? Pennies don’t stay shiny forever.

Near saltwater?

I see some green corrosion in a few places.