The color term derives from Latin  (or dirt) and refers to a kind of soft fine clay whose reddish-brown varieties are used as pigments, and as a coating in panel paintings and frames underneath the paint or gold leaf. Under gold leaf, it "warms" the colour, which can have a greenish shade otherwise.
The term for this color originates from Latin (or dirt) and refers to fine, soft clay used as pigments and in base layers of panel paintings and frames beneath the paint or gold leaf. Under gold leaf, it "brightens" the color, which might have a greenish tone.