David Coley, Jun 29, 2015
The faces of a dodecahedron can be [color=#1551b5]bi[/color]-[color=#0a971e]colored[/color] in sixteen different ways so that the faces of each color are connected. Notice the symmetry between the green faces and the blue faces!
Half the faces are colored green, half are colored blue. The green faces and the blue faces make the same shape on the surface of the dodecahedron.