Differences in F475W (top), F336W−F475W (middle), and F475W−F814W (bottom), calculated as measurements in the B3 field minus the ones in the B0 field, versus the F475W cluster magnitude measured in the B0 field. Results are shown for the same combinations of geometric parameters (r_c and γ) as in Fig. 4 (see legend, where approximate median half-light radii R₅₀ are also included for reference). Markers show the median differences; error bars indicate the 16th–84th percentile ranges. Blue and red markers are slightly offset along the X axis for clarity.