Watercolor painting is a painting method. A watercolor is either the medium or the resulting artwork. Watercolor, also known in French as aquarelle, is named for its primary component. It consists of a pigment dissolved in water and bound by a colloid agent (usually a gum, such as gum arabic); it is applied with a brush onto a supporting surface, such as vellum, fabric, or—more typically—dampened paper. The resulting mark (after the water has evaporated) is transparent, allowing light to reflect from the supporting surface, to luminous effect. Watercolor is often combined with gouache (or "bodycolor"), an opaque water-based paint containing a white element derived from chalk, lead, or zinc oxide.
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