{
0,1,2,3,A-1,   ' A means augment this face   
4,5,6,7B,-1,   ' B means this face is a blank. It will not be written to the output
0,1,5,4,-1,
r 1,2,6,5,-1,   ' r means display this face in red
2,3,7,6,g-1,   ' g means display this face in green
3,0b,4,7,-1,   ' b means display this face in blue
}