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
Faculty of Political Science, Chulalongkorn University Centre (TPRC). The Faculty has also run a prominent academic journal namely Journal of Social Science for over 35 years. The published articles are both written in Thai and English. The black singha is used as a symbol of the dedicated leader. The black colour symbolises the colour of the neck of Shiva who drinks the poison churned up from the world ocean (Halahala) to protect and save all creatures. (In fact, the actual colour of Shiva's neck in Hindu mythology is deeply dark blue or "nila". That's why one of his names is Nilakantha or "having a blue-coloured neck".