Click View tab 3D Palettes panel Visual Styles Manager.
With the current visual style selected
in the sample images, in Face Settings, Face Style, select one of
the following options:
Real, the default, is as close as possible
to how the face would appear in the real world.
Gooch uses cool and warm colors instead
of dark and light to enhance the display of faces that might be
shadowed and difficult to see in a realistic display.
None does not apply a face style. Other
face settings are disabled.