text: # Change the global default background color to white.
  #
  import pyvista
  pyvista.global_theme.color = 'white'
  #
  # Show edges by default.
  #
  pyvista.global_theme.show_edges = True
  #
  # Create a new theme from the default theme and apply it globally.
  #
  my_theme = pyvista.themes.DefaultTheme()
  my_theme.color = 'red'
  my_theme.background = 'white'
  pyvista.global_theme.load_theme(my_theme)
  