+ " pigment {color rgb <0.2 0.9 0.9>}", // cyan
+ " finish { phong 1 }",
+ " }",
+ " }",
+ "#declare track_sphere5 =",
+ " sphere {",
+ " <0, 0, 0>, 0.3", // size should depend on model size
+ " texture {",
+ " pigment {color rgb <1.0 1.0 1.0>}", // white