Tertiary color if they exist at all, though indigo and scarlet are standard for blue–violet and red–vermilion. In another sense, a tertiary color is obtained by mixing secondary-colored pigments. These three colors are russet (orange–purple), slate (purple–green), and citron (green–orange), with the corresponding three quaternary colors plum (russet–slate), sage (slate–citron), buff (citron–russet) (with olive sometimes used for either slate or citron). Beyond that are shades of grey (blue grey and brown greys), which approach but never quite reach black. The RYB color terminology outlined above and in the color samples shown below is ultimately derived from the 1835 book "Chromatography", an analysis
Metallic paint are individually visible. Flakes with different colour effects may also be used within the same paint. Pearlescent paint uses embedded pieces of iridescent material to produce subtly different colours depending on the angle and intensity of the light. More radical colour changes and "two-tone" or "flip" colours (e.g. from purple to orange) are sometimes produced. Two-tone paints such as ChromaFlair have been used by Nissan on some special parts, and are frequently associated with TVR cars. Metallic paint is sometimes described as polychromatic paint, although sometimes only to paints showing strong colour-changing effects. This is distinct from polychrome decoration, which