Beautiful radio. I’m always impressed with the artistic designs, of just about everything, from the 1920’s through the 1940’s.
I haven’t tried this yet but, it is possible to make reproduction spray shield tubes. Take a look at all the products here.
https://www.mgchemicals.com/products/protective-coatings/emi-rfi-shielding/total-ground-carbon-conductive-coating-838/
I’m thinking a person could air brush, using compatible paint, to the correct color, after applying the coating. It might be worth a try with the really rare tubes.
Bob