Same as in Fig. 12, but for 5000 randomly spatially sampled M 83 background images. For reference, derived mock cluster parameters are shown as faint gray dots. Real background samples are shown as black dots, which transition to blue and then to red. The dot size and color represents class_c/b. The blue dots indicate objects with class_c/b >  0.5 and the red dots indicate objects with class_c/b >  0.99.