Select the Icon Next to the icon shown,
you can set the time of day etc.
Then use Graphic Display Options > Lighting (and Shadows)
These images were pulled from the same question a while back so may very in newer versions of Revit but the same process applies
change the View Type from Hidden Line to Shaded or Realistic
Change the View Type from Hidden Line to Shaded or Realistic
That would have been my best answer!