Mean value of the Sérsic index of the bulge profile in the r band for galaxies in cells of 0.75 dex in stellar mass and 0.75 in NUV−r color. Cells with less than ten galaxies are discarded, and the sample size as well as the maximum of the error on the mean and the quadratic mean of the errors on the individual points. Pseudo-bulges populate the Blue Cloud, whereas the Green Plain and the Red Sequence are dominated by classical bulges.