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
Yellow-collared lovebird lightening of the darker feathers, most noticeable in the wings, and face. It was first noted from Green (Wild) coloured parents, & originally called ""Yellow"". This new colour was soon built up in numbers by passionate aviculturelists, and once secure was bred to Blue coloured birds. The result was then known as ""White"", but we now call this combo a Dilute Blue. Yellow-collared lovebird The yellow-collared lovebird ("Agapornis personatus"), also called masked lovebird or eye ring lovebird, is a monotypic species of bird of the lovebird genus in the parrot family Psittaculidae. They are native to northeast Tanzania and have