Signal Red, Gold Happens, Rapunzel Silver
Use Sharpie for Gold Accents
The parts RG-Barrel_Fin, RG-Cover have recesses designed to be gold accents. Use a Gold Extra-Fine Oil Based Sharpie to color in these accents.
The recesses are the same width as the tip of the marker, so painting should be straight forward.
Also, use this marker to paint the raised circular accents around the part RG-Muzzle.