vtkOBJExporter doesn't scale its colors by the appropriate factors
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
vtkOBJExporter creates a material file (.mtl) with information about the material properties of each actor. When the exporter accesses the ambient, specular, and diffuse colors, it fails to multiply the values by the ambient, specular, and diffuse scaling coefficients like it should.
Since the ambient, specular, and diffuse colors are by default (1, 1, 1), having all of them at 100% produces very bright default output.
Fix is to just scale the tempd[0..2] values by the appropriate constant for the three colors.