code: def set_colors(self, colors, pos):
          
          self._colors = colors
          self._pos = pos
  
          end = self._pos + self.numLEDs
          if end > len(self._colors):
              raise ValueError('Needed %d colors but found %d' % (
                  end, len(self._colors)))
docs: Use with caution!
  
          Directly set the pixel buffers.
  
          :param colors: A list of color tuples
          :param int pos: Position in color list to begin set operation.