Vintage Schrader Yellow High Pressure Valve Stem Caps (SOLD OUT!)

[RedBarchetta]

I used Mission Models MMP-067 Yellow Zinc Chromate.  I found that to be the closest match.  They also offer a Semi Gloss Clear Coat (MMA-005), which I mixed in the second and final coat.  It adds just enough sheen to give them that fresh look without being too glossy.  Mission Models also sells a thinner (MMA-003) that smells alcohol-based.  I bought a 4oz bottle so that I had plenty to not only act as a paint reducer/thinner but to clean the airbrush as well.  Good luck!