code: def toggle(self):
          
          r, g, b = self.value
          self.value = (1 - r, 1 - g, 1 - b)
docs: Toggle the state of the device. If the device is currently off
          (:attr:`value` is ``(0, 0, 0)``), this changes it to "fully" on
          (:attr:`value` is ``(1, 1, 1)``).  If the device has a specific color,
          this method inverts the color.