Figure 10.

At left, the number of grains along the edges of the rgb cube. Notice the ‘colour circle’ as a nonplanar, regular hexagon. At centre, the number of grains in constant hue triangles (for instance, the white-red-black triangle holds 92) and the number of grains in volume sectors (for instance, the black-white-red-yellow tetrahedron contains 385 grains). At right, the number of grains counted over the (geodesic) body diagonals of the rgb cube. (Notice that the black-white and the green-magenta diagonals partly overlap in this drawing!).