code: def update_colors(self):
          
          start = self.clock.time()
  
          with self.brightness_lock:
              # Swap in a new brightness.
              brightness, self._waiting_brightness = (
                  self._waiting_brightness, None)
  
          if brightness is not None:
              self._brightness = brightness
              if self.set_device_brightness:
                  self.set_device_brightness(brightness)
  
          self._compute_packet()
          self._send_packet()
  
          self.lastUpdate = self.clock.time() - start
docs: Apply any corrections to the current color list
          and send the results to the driver output. This function primarily
          provided as a wrapper for each driver's implementation of
          :py:func:`_compute_packet` and :py:func:`_send_packet`.