Sends the setLed Pixy command.
        This method sets the RGB LED on front of Pixy.

        :param r: red range between 0 and 255

        :param g: green range between 0 and 255

        :param b: blue range between 0 and 255

        :returns: No return value.

def pixy_set_led(self, r, g, b):
        """
        Sends the setLed Pixy command.
        This method sets the RGB LED on front of Pixy.

        :param r: red range between 0 and 255

        :param g: green range between 0 and 255

        :param b: blue range between 0 and 255

        :returns: No return value.
        """
        task = asyncio.ensure_future(self.core.pixy_set_led(r, g, b))
        self.loop.run_until_complete(task)