| Auto Air Semi-Opaque Colors are semi-opaque with a semi-gloss finish. Semi-Opaque Colors are designed to be used alone over Base Coat Sealer White or Base Coat Sealer Dark. Recommended for use with airbrush sizes 0.5mm or larger; a 0.3mm size airbrush may be used when colors are thinned with Auto Air Reducer. Semi-Opaque Colors can be tinted with Transparent Colors for custom blends by either directly mixing the colors or layering light coats of Transparent Colors over Semi-Opaque Colors. Semi-Opaque Colors may be used as the underlying coat for other Auto Air Colors.Auto Air Fluorescent Colors are transparent with a semi-gloss finish. Use over Base Coat Sealer White or a light background Semi-Opaque or Transparent Color. Recommended for use with airbrush sizes 0.5mm or larger; a 0.3mm size airbrush may be used when colors are thinned with Auto Air Reducer. Please Note: Fluorescent Colors have a limited lightfastness compared to other Auto Air Colors |