Green - HSB 60 50 40 RGB 102 102 51
Orange - HSB 22.84 100 85.49 RGB 218 83 0
Yellow - HSB 44.35 100 90.2 RGB 230 170 0

Link: http://www.sciencedaily.com/releases/2013/03/130318151634.htm

http://www.youtube.com/watch?v=VzCJNgRjwcw