Table 2.

References of the six colors [12].

White	(1, 1, 1)	(0.9608, 0.9608, 0.9608)	(0.9216, 0.9216, 0.9216)	(0.8824, 0.8824, 0.8824)	(0.8431, 0.8431, 0.8431)	(0.8039, 0.8039, 0.8039)
Black	(0, 0, 0)	(0.0392, 0.0392, 0.0392)	(0.0784, 0.0784, 0.0784)	(0.1176, 0.1176, 0.1176)	(0.1569, 0.1569, 0.1569)	(0.1961, 0.1961, 0.1961)
Red	(0.7843, 0.5882, 0.3922)	(1,0.1961, 0.1961)	(0.7843, 0, 0)	(0.7843, 0.1961, 0.1961)	(0.5882, 0, 0)	(0.5882, 0.1961, 0.1961)
Light brown	(0.7843, 0.5882, 0.3922)	(0.7843, 0.3922,0)	(0.7843, 0.3922, 0.1961)	(0.5882, 0.3922, 0.1961)	(0.5882, 0.3922, 0)	(0.5882, 0.1961, 0)
Dark brown	(0.5882, 0.3922, 0.3922)	(0.4902, 0.2941, 0.2941)	(0.3922,0.1961, 0.1961)	(0.3922, 0.1961, 0)	(0.3922, 0,0)	(0.1961, 0,0)
Bluish gray	(0.5882, 0.4902, 0.5882)	(0.4902, 0.4902, 0.5882)	(0.3922, 0.3922, 0.4902)	(0.3922, 0.4902, 0.5882)	(0.1961, 0.3922, 0.5882)	(0, 0.3922, 0.5882)