I recently made a model of a bridge in Autodesk Inventor. I downloaded the "publish to sketch-fab" add-in so I could upload to sketchfab right from Inventor. I then uploaded the bridge to sketchfab. When I did this it lost all of it's color. It was completely grey. Does anyone know if I did something wrong, or how to fix it? I see sketchfab is capable of doing incredible coloring, but I'm not sure if it recognizes the coloring from Inventor.