Six rest-frame LSST color curves without microlensing for four different SN Ia models. The vertical lines mark the mean duration of the achromatic phase by averaging over 30 microlensing magnification maps (see Appendix B). This figure contains only the color curves that are promising for time-delay measurements (i.e., color curves exhibiting features like extreme points or turning points that are located within the achromatic phase for at least three SN Ia models). For the remaining nine LSST color curves see Fig. C.1.