The truncated 120-cell is one of the nicest of the 15 uniform 4-D polytopes having the symmetries of the 120-cell and 600-cell. This one has been projected obliquely, to a 3-D subspace that is not orthogonal to the projection direction, making it appear slightly stretched out.
The stretching is just right to produce red, blue, green, orange, and purple struts. The last two strut colors (signifying particular orbits in icosahedral symmetry) don’t exist in real Zometool.