code: def copy(self):
          ''' Return a copy of this color value.
  
          Returns:
              :class:`~bokeh.colors.rgb.RGB`
  
          '''
          return RGB(self.r, self.g, self.b, self.af copy(self):
          ''' Return a copy of this color value.
  
          Returns:
              :class:`~bokeh.colors.rgb.RGB`
  
          '''
          return RGB(self.r, self.g, self.b, self.a)
docs: Return a copy of this color value.
  
          Returns:
              :class:`~bokeh.colors.rgb.RGB`