Newton originally (1672) named only five primary colours: red, yellow, green, blue and violet. Later he included orange and indigo, giving seven colours by analogy to the number of notes in a musical scale.
Red, Orange, Yellow, Green, Blue, Indigo, Violet
http://en.wikipedia.org/wiki/Rainbow#The_seven_colours_of_the_rainbow
Edited by SouLSLayeR, 12 October 2010 - 22:55.











