Quiescent fraction vs. m814–m140 color for red (m814–m140 > 1.5) galaxies in all five clusters. Galaxies bluer than m814–m140 = 1.5 are not shown as they are always classified as star-forming (thus 0% quiescent fraction, see Fig. 6). Shaded histograms represent the color distribution of cluster galaxies as in Fig. 1, arbitrarily rescaled. Empty and solid symbols show, respectively, quiescent fractions for the m140-selected and for the log(M/M_⊙) > 10.85 (common) mass complete samples. Error bars show binomial confidence intervals (1σ). Color bins with < 2 galaxies are not shown.