The flag has a dark black background. In the center of the flag

The flag has a dark black background. In the center of the flag, Batman is drawn in his iconic suit, with his cape fluttering in the wind. Batman is standing on a rooftop, and in the distance the illuminated football stadium can be seen. The scene can be framed by a silhouette of the urban skyline, with the stadium lights shining brightly and standing out against the night sky. All that in manga style drawing.