George Field, Chromatography; or, a Treatise on Colours and Pigments, and of Their Powers in Painting, &c. (Field, 1835, p.132)

Talking about the use of purple to harmonize ‘the broad shadows of a bright sunshine ere the light declines into deep orange or red’, George Field (1777–1854) claims that ‘Girtin, who saw Nature as she is, and painted what he saw, delighted in this effect of sun-light and shadow’.