Created and rendered in Cheetah 3D (5.8). In some preview images a sky light was added, which is not included.
File Formats: 3ds (3D Studio) obj (generic format supported by most 3D programs) jas (Cheetah3D) fbx (Autodesk) sia (Silo) However, I'm sure that at least one of these file formats will work on other 3D applications! (There are no colors in obj format.)
These file types have been checked (in C3D) and should work properly.
None of the preview images have been modified in an image editing application!