docs: def set_color(self, ipaddr, hue, sat, bri, kel, fade):
          """ Send SETCOLOR message. """
          cmd = {"payloadtype": PayloadType.SETCOLOR,
                 "target": ipaddr,
                 "hue": hue,
                 "sat": sat,
                 "bri": bri,
                 "kel": kel,
                 "fade": fade}
  
          self._send_command(cmd)