code: def to_color(self, normalize=False):
          
          im_data = self._image_data(normalize=normalize)
          return ColorImage(im_data, frame=self._frame)
docs: Convert to a color image.
  
          Parameters
          ----------
          normalize : bool
               whether or not to normalize by the maximum depth
  
          Returns
          -------
          :obj:`ColorImage`
              color image corresponding to the depth image