def get_valid_colors() -> list:
    """ Returns list of valid colors (BGR) for markers and frames """
    colors = [
        (0, 0, 200),
        (0, 200, 0),
        (200, 0, 0),
        (200, 130, 0),
        (200, 0, 200),
        (0, 200, 200),
    ]
    return colors