Colors of the Sky
Blue	#0000FF	rgb: (0,0,255)	(240,100%,50%,0.7)
White	#FFFFFF	rgb: (255,255,255)	(0,100%,50%,0)
Yellow	#FFFF00	rgb: (255,255,0)	(60,100%,50%,0.7)
Grey	#808080	rgb: (128,128,128)	(0,0%,50%,0.5)