Hotwater,
You're right on my AC-6. This morning, I noticed that the FP engine has the silver on the front that I painted with Sacramento gray. Not being my main railroad, I didn't know about that. Such as it is!
======
Cab/engine detail:
Spent the morning using white, red and gold painting up the cabs gauges , handles and knobs.
Also, did the boiler piping, poppet valves and knobs, and adding a 2nd coat of white to the walk boards for side trim.