From Latin aqua (water). A painting technique that uses watercolours. These consist of fine-grained colour powder mixed with binding agents such as rubber arabicum, protein or honey and are then used with water for painting. Watercolours remain water soluble after drying. Although they can be used for covering purposes, their characteristic hallmark is a more or less fine hue that depends on how the colour is applied on the surface. For white areas no colour is applied at all.