Blue could also mean dark green, violet, black or brown. The ancient Greek word for a light blue, "glaukos", also could mean light green, grey, or yellow. The Greeks imported indigo dye from India, calling it indikon. They used Egyptian blue in the wall paintings of Knossos, in Crete, (2100 BC). It was not one of the four primary colours for Greek painting described by Pliny the Elder (red, yellow, black, and white), but nonetheless it was used as a background colour behind the friezes on Greek temples and to colour the beards of Greek statues. The Romans also imported indigo
Colonialism and the Olympic Games protest China's treatment of protesters in Tibet. During the Olympic torch lighting ceremony in Greece on 24 March 2008, three Reporters Without Borders journalists breached a cordon of 1,000 police at the ancient Olympia stadium and interrupted the speech of Liu Qi, head of the Beijing Games committee. One protestor tried to snatch the microphone as another unrolled a black flag showing the Olympic rings as handcuffs. Nearly 50 Tibetan exiles in India began a global torch relay 25 March 2008 with a symbolic "Olympic" flame that ended in Tibet on 8 August 2008, the day of the Summer Games'