Thank you for asking, Carl
I hope to be troubling myself with these details within a year (if not this Summer).
By the way, my guess is that the metal strips would be semi-gloss black (same as running boards).
I think the bed boards (at least in some years) were "painted" with a mixture of linseed oil and coal-tar black, Lamp Black (I hope someone can prove me wrong with documentation).
http://www.oldchevytrucks.com/blog/index.php/2010/02/truck-beds-black-wood/I'll guess the heads of the side bolts were painted body color (I hope someone can prove me wrong with documentation).
If you want to talk with an expert about this, call Bob Adler (search on-line). Let us know what Bob says.
