Original frame was painted semi-gloss black. Then the
components were mounted to the frame on the production line.
Suspension parts, i.e. springs, spring hangers etc., axles,
drive line, steering components, transmission were all bare
metal from the factory.
During a restoration most guys end up painting the parts that
were originally bare. Your choice, same as the frame, that is
black or cast blast (sort of off gray) or what ever color
suits your fancy.
DG