Vallejo The Shifters Eccentric Color Series is a selection of ready-to-use metallic acrylic airbrush colors. The multi-chromatic pigments used in the formulation of these colors give them a vibrant metallic sparkle, while their glass-like coating acts like a refracting prism. Each flake presents a variety of colors depending on the angle of view and incident light; the color-shift effect is observable with both high-gloss and low-gloss applications and in a wide variety of lighting conditions, and it’s intensified if the colors are applied on a curved surface, while best effects are obtained over a gloss-black base color. Shake well, and apply in thin layers.