docs: def invoked(self, ctx):
          """Method called when the command is invoked."""
          if not ctx.ansi.is_enabled:
              print("You need color support to use this demo")
          else:
              print(ctx.ansi.cmd('erase_display'))
              self._demo_fg_color(ctx)
              self._demo_bg_color(ctx)
              self._demo_bg_indexed(ctx)
              self._demo_rgb(ctx)
              self._demo_style(ctx)