Topic: Finish for '68 emergency brake "lever arm" and parts under the car

[Oz390]

Thought these were all S2, but just stripped gunk off a 68 "lever arm" (the part that attaches to the body pin with the big washer and clip) and it appears to be silver zinc.

What is the correct finish for the lever arm, "U" shaped clip to connect body clip to the wire on the RH side, and the clip that slips over the wire and its stud and adjusting nut?

Dearborn May '68 build if relevant.

also, I believe the fitting on the ends of the brake cables that slip into the retaining plates and are clipped in place were painted orange as remnants of orange appeared to exist on them.  If so was this brushed or sprayed and gloss, semi or flat...