Schmincke Aero Color Professional Airbrush Colors are specially formulated for the airbrush but are also suitable for retouching pens, dip-pens, and brushes. Ready to use, water-resistant, and nearly odorless, they are available in 36 brilliant colors and 12 special effects colors. - Schmincke Aero Color Professional Airbrush Color - 28 ml, Aero Vision Silver VioletChartpak Schmincke Aero Color, AERO VSN SLVR VLT 28 - These multi-color effect colors, whose unique effect depends on the structure of the surface on which they are painted, show a fascinating gradation of colors. The colors change when the observer changes the angle from which he is looking at them. The darker the color of the background, the clearer the effect becomes.