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
Green Dot (symbol) obvious links with the Chinese Taijitu (yin and yang) symbol and Gary Anderson's recycling symbol. Where full-color printing is available, its official form is printed in a light and a dark shade of green (Pantone 366C and 343C). For cost reasons or to avoid a visual clash with other symbols, many manufacturers chose a black-and-white or other color combination on their packages. The Green Dot logo merely indicates that a company has joined the Green Dot scheme, and "not" necessarily that the package is fully recyclable. The logo is often confused with the recycling logo. In Malta, Green Dot Malta