Ah, another resurrection. Some one's been digging in the graveyard :yes:
Anybody paint them black? I was told many years ago that flat black transfers heat more efficiently (the person said that race car engines were flat black for that reason).
I did it in the house I owned then, I think it made a difference. And it look better than silver, IMO. I know some people paint them the color of trim or walls, but many layers of paint deter transfer of heat.
We used to sand and brush them in place and paint them with a brush. Tedious.