(u − r)_res (top panels) and (u − r)_int (bottom panels) colour vs. stellar mass for the redshift bin 0.25 <  z <  0.35 derived by BaySeAGal from the AEGIS galaxy populations (contour) and galaxy cluster members (circles). The coloured bar shows the distribution of the stellar population properties age, extinction, and metallicity (from left to right). The size of the circles indicates the probability of the galaxy to be member of the cluster. The position of the brightest galaxy in the cluster (BCG) in each panel is marked. The dashed line in the (u − r)_int divides blue galaxies (below the line) and red galaxies (above the line).