对比画法
Sgraffito \Sgraf*fi"to\, a. [It.] (Paint.) Scratched; -- said of decorative painting of a certain style, in which a white overland surface is cut or scratched through, so as to form the design from a dark ground underneath.
sgraffito n : a ceramic or mural decoration made by scratching off a surface layer to reveal the ground [also: {sgraffiti} (pl)]