Need a little advice with my 360 teardown

The copper color comes from the heat treatment done on the rods... sometimes they remove it sometimes not. I have 340 rods that are a mix that came from the same engine. No worries.

Some will say the copper was a plating that fixes mis-machined parts. Not so...

Factory bearing shells will usually have FM (Federal-Mogul) and the bearing size on the back of the shell.