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
Blue-tailed bee-eater Blue-tailed bee-eater The blue-tailed bee-eater ("Merops philippinus") is a near passerine bird in the bee-eater family Meropidae. It breeds in southeastern Asia. It is strongly migratory, seen seasonally in much of peninsular India. This species is sometimes considered to be conspecific with the blue-cheeked bee-eater, "M. persicus". This species, like other bee-eaters, is a richly coloured, slender bird. It is predominantly green; its face has a narrow blue patch with a black eye stripe, and a yellow and brown throat; the tail is blue and the beak is black. It can reach a length of 23–26 cm, including the two