The orange parts are an emission map and can easily be turned off.
All textures are 2k resolution.
Sculpt + Retopo done in blender, texturing in Substance Painter
STL (Stereolithography, filesize: 120 MB), OBJ (OBJ, filesize: 120 MB), FBX (Autodesk FBX, filesize: 120 MB), BLEND (Blender, filesize: 120 MB), DAE (Collada, filesize: 120 MB), GLTF (glTF, filesize: 120 MB)