I have had good luck matching with the one oz BVM paints. You can adjust the color minimally by thinning. If you have the room in the area you need to work on shoot your airbrush toward the good area, not away from it. This is usually not a problem with wingtips. Also if you can use existing demarcations such as a hinge line or panel line. Let it cure well then wet color sand with 800->1200->1500->2000 and then rub out and buff. If your lucky it will be almost unnoticable. Scotty