Magnitude (left panel) and colour (right panel) logarithmic distributions of FPs (red) and FNs (blue), overlapped to the CLM (green) and NCLM distributions, for the fifteen clusters (stacked) included in our study. The number of objects for each plotted distribution is quoted in brackets in the legend. The differential colour (F606 − F814)_diff is obtained by applying the correction for the mean colour-magnitude relation for each cluster. Table 3 outlines such results.