code: def xy(self):
          
          if self._xy != (None, None):
              self._x, self._y = self._xy
  
          if self._x is not None and self._y is not None:
              x = self._x
              if self._x > 1:
                  x = self._x / 65555
              y = self._y
              if self._y > 1:
                  y = self._y / 65555
              return (x, y)
  
          return None
docs: CIE xy color space coordinates as array [x, y] of real values (0..1).