docs: def savedColorSet( self ):
          """
          Returns the current colors as a saved color set.
          
          :return     <XColorSet> || None
          """
          colorSet = self._colorSet
          if ( not colorSet ):
              return None
          
          labels = colorSet.colorGroups()
          for i in range( self.topLevelItemCount() ):
              item = self.topLevelItem(i)
              colorName = item.name()
              for i, color in enumerate(item.colors()):
                  colorSet.setColor(colorName, color, labels[i])
          
          return colorSet