code: def blink1(switch_off=True, gamma=None, white_point=None):
      
      b1 = Blink1(gamma=gamma, white_point=white_point)
      yield b1
      if switch_off:
          b1.off()
      b1.close()
docs: Context manager which automatically shuts down the Blink(1)
      after use.
      :param switch_off: turn blink(1) off when existing context
      :param gamma: set gamma curve (as tuple)
      :param white_point: set white point (as tuple)