Using the colours green, red, black and white
Paintings were confiscated and artists prosecuted. Prohibitions centred round portraying signs or symbols of Palestinian identity, e.g. the flag, with its colours of green, red, black and white. Prohibitions extended to displaying the word "Palestine" (in Hebrew, Arabic or English), the possession of the flag, suspect postage stamps, and any painting or picture which grouped the forbidden colours together including pictures of wildlife with white, black, green, and of red flowers placed too close one to the other. Other examples were a horse rearing on his hind legs, "The Horse Refuses", confiscated as a "nationalistic incitement" because it "really means the rejection front", a painting of a dove standing on a window painted with the pattern in red of the Keffiya (the Arab headdress), and celebrations of Palestinian peasant embroidered dresses and folk tales and poetry.
