I have a customer that wants the gold star with black background Army Emblem put on a holster. Will the Angelus acrylic paint hold up and not wear off? What kind of finish would you recommend to protect it? Do I paint the emblem on first and dye the holster brown around it? Any help would be greatly appreciated.

You’re not going to have much choice outside of Angelus, when it comes to the gold. Dye the holster first, and make sure you get all the excess pigment removed. Then do the painting.  Any sort of paint will be subject to abrasion, but the angelus is formulated for re-dyeing shoes, so it will be about the best you can do. You can add Angelus Acrylic Finisher or use your sealant of choice.