Rest-frame colors of the galaxies. Stars and circles represent galaxies in the cluster and the field, respectively. Small symbols and gray colors show galaxies from Vulcani et al. (2023) not specifically targeted here. Larger symbols indicate the galaxies analyzed in the present paper and are color coded according to their Δ(F200W-F444W), which is measured as the difference between their measured color and the color they would have if they were on the red sequence given their F200W magnitude. The horizontal black line in the color bar shows the adopted threshold between normal galaxies and red outliers. Left: Rest-frame B-V vs. stellar mass diagram. The green line represents the best fit of the red sequence, along with the 3σ scatter. Right: Rest-frame U-V vs. V-J diagram. The green line represents the separation between star forming and passive galaxies from Labbé et al. (2005).