Thanks David I thought they might have been blue or black.I have an original and the engine was painted with the valve covers on. Bolts were painted and the gasket was painted. Original oil Filter was painted. They put very little paint on also and runs in some other places.
As far as I know they did start all the engines before going into the vehicle assembly plant. It was part of the testing at the engine plant, Windsor or Cleveland. They would for sure want to ship the engines closed up with covers to keep the dirt out.
The bell housings were not on the engine when painted and they are black I believe or maybe just raw.