code: func (l *RgbLedDriver) On() (err error) {
  	if err = l.SetLevel(l.pinRed, l.redColor); err != nil {
  		return
  	}
  
  	if err = l.SetLevel(l.pinGreen, l.greenColor); err != nil {
  		return
  	}
  
  	if err = l.SetLevel(l.pinBlue, l.blueColor); err != nil {
  		return
  	}
  
  	l.high = true
  	return
  }
docs: // On sets the led's pins to their various states