Get a few of these and fill 'em with nitrate dope: View: https://www.amazon.com/gp/product/B00OI1XKI6/
never used sigment or nitrate dope. regular old lacquer works just fine, and its about 1/5th the price.
Back when dinosaurs walked the earth and people weren't all that concerned with what they smelled (i.e. freon days and scratch built ships\1980's) Tom and John Jass showed up with a Rodney that was painted in it's wild camouflage scheme from Normandy landings. Being former airplane guys they introduced everyone to Aerogloss dope and that was used for patching. The nice by-product was you could patch with a color coat and no one would know how damaged you were. Dried really quick. You always knew it was battling season! The smell of Ambroid and Aerogloss in the air!!