................... also, were the spindle arms painted black in 66 or were the that dark oil natural metal look like the one from the thread from the above link?
Easy one first - no the spindle arms nor the rest of the spindle was painted black but instead oil quenched heat treated with machine surfaces so there are a number of different areas that should contrast.
As for the rest
I'm looking for paint markings for a car similar with factory disk brakes.
So what are the details of that car? Makes all the difference.
Production period, body type, trans, engine, PS?, AC? GT?