old_contents: """
  Types of Shading
  ~~~~~~~~~~~~~~~~
  
  Use a custom built colormap when plotting scalar values.
  """
  
  import pyvista
  
  pyvista.set_plot_theme("document")
  ###############################################################################
  # PyVista supports two types of shading, flat and smooth shading that uses
  # VTK's Phong shading algorithm.
  #
  # This is a plot with the default flat shading:
  sphere = pyvista.Sphere()
  sphere.plot(color="w")
  
  ###############################################################################
  # Here's the same sphere with smooth shading:
  sphere.plot(color="w", smooth_shading=True)
  
new_contents: """
  Types of Shading
  ~~~~~~~~~~~~~~~~
  
  Comparison of default, flat shading vs. smooth shading.
  """
  # sphinx_gallery_thumbnail_number = 2
  import pyvista
  
  pyvista.set_plot_theme("document")
  ###############################################################################
  # PyVista supports two types of shading, flat and smooth shading that uses
  # VTK's Phong shading algorithm.
  #
  # This is a plot with the default flat shading:
  sphere = pyvista.Sphere()
  sphere.plot(color="w")
  
  ###############################################################################
  # Here's the same sphere with smooth shading:
  sphere.plot(color="w", smooth_shading=True)
  
subject: Fix shading example docs