Color–magnitude plot of red-sequence early-type galaxies. The slanted rectangles indicate the selection region (± 0.2 mag from the color-magnitude relation), with H magnitude brighter than a SSP with log M/M_⊙ = 10.7, both in the cluster (upper panels) and reference (bottom panels) lines of sight. Clusters are color-coded as in Fig. 8. The open points indicate galaxies within the boundaries but with unfeasible isophotal analysis.