Imported 3D model's textures are too dark (3DS)

[Milos]

3DS model created in SketchUp imported to to multipatch feature class has very dark textures.

There is no global lights in SkecthUp and shadows are off.

I have tried to import it as Collada and textures light is OK (although there are many other issues with Collada models in ArcGIS)

Please advise.

ArcGISSketchUp