Similar to Fig. 2, but for cloud fractions ranging from 0.0 to 1.0 in steps of 0.01. The surface pressure is 1 bar. The results are shown for the phase curves generated by the weighted sum of cloud-free (f_c = 0.0) and fully cloudy (f_c = 1.0) planets (see Appendix C). The purple, yellow and cyan colors at α > 140° result from the high RGB color sensitivity on the very small absolute polarized fluxes |Q| for the different wavelengths at these phase angles (cf. Fig. 9).