light_up.py

def light_up_element(self, element_name, color):
    """
    Send a midi message to light up an element.

    element_name:          the name of the element to light up
    color:                 a string 'red', 'orange', or 'green'
    """
    status = MIDI_NOTE_ON_STATUS + MIDI_CHANNEL_NUM
    note = self._element_color_to_midi[element_name][color]
    velocity = 127
    self._c_instance.send_midi((status, note, velocity))