My '66, '67, and '70 Chrysler 383s all have clutch fan colorations as you describe. Natural aluminum blades riveted to a black painted hub. For a non-clutch fixed-blade fan, I'd suspect that one would be all black, the same satiny black used on the air cleaner and engine brackets. NOT a hard, shiny black as so many tend to use, which is incorrect on Mopars and GMs.
ONE thing about doing restorations, restore the car as you find it, not specifically to some other standard(s). If, for example, when you car was built, a "spot shortage" in fan blades might have happened. Not desiring to stop the assembly line, a substitution of another blade spec might have happened. If the vehicle had some overheating issue during warranty, then warranty would pay to fix it with the correct fan blade. Otherwise, things stayed "as assembled".
The other thing is that although there was a build manual for each type of car, one plant/shift might have done all of the markings, but another plant and/or shift might have not been as diligent in doing them, or moreso, in comparison. Although similar to C-bodies, A/B/E-bodies might have had different spec items on them, even for similar engines and such.
Carefully clean and photographically document the pre-cleaned and cleaned conditions. Noting paint daubs, inspection marks, or other color stripes which were important on the assembly line. Easier to see a color marking rather than to look at a printed tag. Quicker, too. Every thing you might need to reproduce these markings and daubs should be available from restoration people as Roger Gibson or similar. Chrysler had their own unique way of building vehicles, as did Ford and GM. Doing it "accurate" might not make it look as nice as a similar Ford or GM, especially as so many of those cars have been "over-restored" rather than accurately restored, by observation.
There can also be some grease pencil markings under the hood. On the '70 SuperBird 440 I helped with, there was a black marking on the lh valve cover. It was reproduced by another guy in the group re-doing it "free hand". Also some other marks on the core support or similar, for cooland "freeze" proetection.
Respectfully,
CBODY67
