Imagine a roof with 87 faces, each face with an average of four sides (borders).

87 faces is an extreme roof, most will have less faces. Maybe a switch where you choose to generate separate borders or not. That way you can avoid an extremely long list of properties. Personally I would prefer a long list if it gives me the posibility to fine-tune the look of a roof.

On the other hand, I feel you as a programmer: why not take the source, modify and try your wishes than share it with us?

I am a (professional) programmer but mainly in C# (on Linux). I'm currenty very busy but I'll see if I can make some sense of Java [:))] The syntax is apparently very similar to C# so a quick understanding of what is what should be easy.