def __get_background_color(self):
value = self._get_target().getPropertyValue('<STR_LIT>')<EOL>if value == -<NUM_LIT:1>:<EOL><INDENT>value = None<EOL><DEDENT>return value<EOL>
Gets cell background color.

Color is returned as integer in format 0xAARRGGBB.
Returns None if the background color is not set.