Import from Mathematica
There are a number of LiveGraphics3D models available.
As a general rule, if you can find a MathWorld page with an
applet model on it, you can grab the underlying model file,
and import it directly into Springie.
There is a big list of polyhedra available from Mathworld here.
To import these models, visit one of the pages with a
LiveGraphics3D applet on it  e.g.:
http://mathworld.wolfram.com/GreatRhombicosidodecahedron.html
Then, you need to view the HTML source  probably using a browser menu option.
Search through the source for the text: "input_archive".
That will be followed by the path to a zip file.
In the case of this example, the model of the Great
Rhombicosidodecahedron is actually stored at:
http://mathworld.wolfram.com/zip/u28.zip
Downloading that file, unzipping it, and loading the
resulting ".m" file into Springie results in the
model being successfully loaded.
After recolouring the faces, and exporting as POVRay, the following image was produced:
Another example would be the Rhombic Triacontahedron:
http://mathworld.wolfram.com/RhombicTriacontahedron.html
The corresponding zip file is at:
http://mathworld.wolfram.com/zip/archdu04.zip
POVray renders the result as:
