Vent window frame coatings

[WSSix]

I'd really like to redo the vent window frame on my 86 C10. They are currently painted black and it's not the best job. I'd like to keep them black. What coating should I consider or should I just paint them a satin black with automotive paint? I'm mainly referring to the divider piece that separates the main window from the vent window. For the trim around the vent window itself, I'm guessing I have no choice but to paint it. If someone knows how to coat just that piece without damaging the glass, I'm open to ideas.

Thanks