Paint on rear window chrome pieces, '65 Barracuda

Its time for me to give serious consideration to the chrome pieces at the base of the rear window on my '65 Barracuda project. I'd like some feedback as to what techniques others have used to paint these. On most any original pieces I see, and the two sets I have , the paint is literally gone. One of the biggest challenges I see is getting the paint to stick and hold up over time, as well as the difficulty masking off the areas not to be painted. I'd appreciate input as to how the chrome was prepped, what primer was used, what top coat, and how did you mask it? I do recall that someone was producing the triangle shaped red and blue inserts that go in the center in vinyl tape, anyone know a source for those now? Attached is a reference picture taken at a car show a while back as a sample of the painted molding, this is not my car.

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