Good days Folks, first time using this site so my apologies if I don't do this correct. If anyone could help me with identifying the original colors of the master cylinder and power brake booster for my car it would be greatly appreciated. I am pretty sure the master cylinder is a cast iron color ? and the booster I have seen both black and the natural metal gold color?

 

Booster were cadium plated and the master is a cast gray. Eastwood sells a spray cadium kit as well as a cast iron gray or detail gray

 

Thank you for your advise on this concern. I am trying to restore everything under the engine compartment to its original and this was an area that seems to be questionable. Greatly appreciated.

 

Eastwood has a "Brake Gray" that replicates fresh cast iron and also resists brake fluid.. I sprayed it on my new MC and could hardly tell where I painted, it was close but a little more silvery. 4 years later, still looks good.
Before
https://classicoldsmobile.com/forums...tml#post295504
After
https://classicoldsmobile.com/forums...tml#post297285
https://classicoldsmobile.com/forums...tml#post306731

Booster had the gold cadmium plating.