This bb is a great resource for the questions you've asked, and for the ones that are still to come. "Zagato Olaf" has a great amount of knowledge about the history of these cars, and he, no doubt will be chiming in soon with some responses about your window trim. All my window trim is black, but may have been coated by the previous owner during restoration or repaint, so I'm not able to help.
(You're gonna LOVE driving this car!)
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I'd rather be in an Alfa praying to God that we'll make it home, than sitting in a church thinking about my Alfa.
Gordy Hyde
1974 Spider 2000 ~ "Mia" (Carb-free)
1971 Junior Zagato 1750 (1800605) ~ "Zach"