def METHOD_NAME(palette):
    if isinstance(palette, tuple):
        palette = list(palette)
    if isinstance(palette, box.Box):
        if "default" not in palette:
            raise ValueError("The provided palette Box object is invalid.")
        return list(palette["default"])
    if isinstance(palette, str):
        return common.check_cmap(palette)
    if isinstance(palette, list):
        return palette
    raise ValueError("The palette must be a list of colors, a string, or a Box object.")