def _background(self):
        """Return the background color."""
        if not (self.background_basic or self.background_high):
            return 'default'
        if self.background_basic:
            return _BASIC_COLORS[self.background_number]
        if self._value & _HIGH_88_COLOR:
            return _color_desc_88(self.background_number)
        return _color_desc_256(self.background_number)
dataset/ETHPy150Open AnyMesh/anyMesh-Python/example/urwid/display_common.py/AttrSpec._background/original