M_star distributions of green sub-classes C4–6 normalised to the maximum value of the histograms. The mean and standard deviation are shown in the upper left. The KS probability is displayed in the upper right. The green filled histogram indicates the M_star distribution for the mass-matched sample and corresponds to the area below the distributions for all three sub-classes. The vertical line corresponds to the transition mass at z ∼ 0.7. The number of galaxies in low- and high-mass samples, respectively for each sub-class, are given in the centre-right.