A wave of color constantly breaking on the shore.
With a reddish tint in the bottle, Electrum, when used over a black primer, exhibits a subtle color shift between greens, golds, and a hint of warm something or other on the finish. It is always changing and doesn't have an either/or kind of look.
Turboshift paints are made with tiny glass-like flakes that work like millions of small prisms within the paint. Depending on how the flakes are made, different colors are refracted or reflected in the light. In layman's terms this means that the paint changes color depending on what light you are viewing it under, and what angle you are holding it to that light.
Formulated for airbrush use, but may also be hand brushed.