When making polyhedron models, it is possible to color the faces in various patterns for purely aesthetic reasons. Certain coloring schemes are compatible with the symmetry of each polyhedron. In general I have not done that in this collection of polyhedra (except on the page which discusses coloring schemes). I have used color for other purposes:
Here is a table of the different colors used:
Knowing that each face is a single color and keeping in mind this relationship between colors and face types is useful for understanding polyhedra in which the faces intersect with each other. Note that the apparent colors vary according to the lighting conditions set in your viewer.