Correct color for steering/suspension parts?

[70GranCoupe]

I have a 70 Gran Coupe (Hamtramck), what is the coorect color for the steering/suspension components?

I assume most are painted black, body color or natural, what color black, I think semi-gloss?

Are the control arms supposed to be natural or painted for that year/model?

Please correct and add to this list.

Torsion Bars - blk
sway bar - blk
k-9 member - blk
control arms - natural
Steering knuckles - blk
Trans Cross Member - blk
Frame - body color
Steering box - natural

Any help appreciated, thanks! Sean

[Chryco Psycho]

I am not the best with correct colors but the lower control arms were cosmoline , spindles were natural, manual alum boes were natural & power were black I believe 

[70GranCoupe]

What color is cosmoline?
That wears off doesn't it?
When it does it is just natural correct?
Thanks this is also for a 1970 model built in 1969, there are a few differences I have noticed because of the '69 build date.
Thanks!
Sean

[FY1 RT SE]

Cosmoline.

[70GranCoupe]

Thanks for the pics how do you reproduce this after the arms are blasted mine are pretty rusty?
Thanks! Sean

[FY1 RT SE]

Eastwood sells and CRC makes it.  Hang them up and spray multiple coats on them allowing dry time (a day or so) between coats.