More Miscellaneous Itms in the Boot

I was cleaning out the boot on my 73 xj6 and noticed something I want to verify if possible.

On the 73 xj6 the metal items in the boot, including the “hinge” on the wooden cover over the spare tire, the metal brace on the underside of the fixed portion of the same wood cover above the fuel pumps are a light battleship gray while the same items on the 70 xj6 are gloss black. Both paint jobs look original and factory quality.

Can anyone confirm either or both colors as factory finish?