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
Black and Yellow the Pittsburgh Pirates. In the year after it was released, "Black and Yellow" spawned dozens of remixes, parodies and remakes, both in the US and internationally, many of them made in tribute to a local sports team. At Super Bowl XLV in 2011, which featured the Steelers competing against the Green Bay Packers, the Steelers used "Black and Yellow" as their fight song, while the Packers used a remix by Lil' Wayne called "Green and Yellow", marking the first time both teams at the Super Bowl had used the same song. On the issue dated October 2, 2010, "Black and