v2 rgb
7
0.0   1.0   1.0   1.0   1.0 0
0.001 0.001 0.998 1.0   1.0 0
0.25  0.25  0.50  1.0   1.0 0
0.5   0.5   0.5   0.5   1.0 0
0.75  1.0   0.5   0.25  1.0 0
0.999 1.0   0.998 0.001 1.0 0
1.0   0.0   0.0   0.0   1.0 0