Hello Mike,
Yes these can be rechromed. No good chrome is inexpensive. Done properly you will not lose the pattern. All of my interior chrome was redone, and I think it was done very nicely.
My interior chrome was done mostly by Graves Plating in Alabama
http://gravesplating.com because the restorer had experience with them.
I believe that the interior chrome is zinc; surely the fresh air vents on either side are, so I suspect the parts that connect them are too.
Graves isn't the only one that will do this properly, but surely you can find a decorative show-chrome plater that will gently handle your parts.