Mine definitely have a yellow cast to them just like a quadrajet carb would except much lighter. I'm taking some stuff to get plated and will ask the plater what he can do, but will probably paint like Jim or Dave if the cost is prohibitive. Plus, I like the look that Jim and Dave got. Because the housings are zinc diecast, I'm hoping the plater can just etch them and directly yellow chromate them which is a very simple process.
Bob: On the stainless trim that surrounds the tail light lens, I carefully pried mine off to polish the lenses and the stainless. The plastic has some barbs that catch the stainless and I very carefully worked my way around them with a screwdriver raising them up a little at a time. I definitely would not attempt to do this with the lenses on the car. I may have a spare stainless if you need it.
Jim: Chrome powder sounds interesting, but the powder people are too far a drive for me here.