84184f16_son_Wesley_Publishing_Company____Eight_Combinations_of_Layers_Color
[0] 2 [Layer 1] absent [Layer 2] present [Layer 3] absent [Color] 
green
b l a c k
r e d
g r e e n
b l u e
p i n k
y e l l o w
w h i t e
g r a y
Chapter 13 - OpenGL Programming Guide (Addison-Wesley Publishing Company)
Color