old_contents: def interpret_string_rgb(string_rgb):
    assert len(string_rgb) == 6
    int_rgb = int(string_rgb, 16)
    return (int_rgb >> 16 & 0xff, int_rgb >> 8 & 0xff, int_rgb & 0xff)
  
new_contents: def interpret_string_rgb(string_rgb):
    assert len(string_rgb) == 6
    int_rgb = int(string_rgb, 16)
    return (int_rgb >> 16 & 0xff, int_rgb >> 8 & 0xff, int_rgb & 0xff)
  
  
  def sequence_to_string(sequence):
    return ", ".join(sorted(str(elem) for elem in sequence))
  
subject: Create util.sequence_to_string()