Cadmium versus Zinc bolts

[blkulis]

All of my fender bolts and other engine bolts are spray painted over engine black. I need to replace them while I have the engine out. What were they originally? I see silver colored (are they Zinc?) and Cadmium (gold color) for sale.

 

[72HCODE]

the fender bolts along the hood gap were Gold color Cadmium.

most of the engine bay Apron bolts are cadmium gold.

the engine bolts are usually silver colored. some had a red oxide coating on them. you can check out AMK products http://www.amkproducts.com/