you could also use acrylic laquer, which has huge advantages over over
nitro and no real disadvantage (it can be shot very thin) or a
basecoat/clearcoat
system, while a bit more work, can also be done thin/light and will be
many times more durable than nitrocellulose. Either of these two
systems can be EXACTLY color matched and are locally available
anywhere at an autobody supply store. Try Ditzler Duracryl for acryl
laquer, or Deltron for b/c system, or other types by Sikkens,
Martin-Senor, Glasurit, etc.