Similar to Figs. 5–7, but for early-type source stars by considering the GD and BL effects. The parameters of the light curves are given in Table 6. The right-hand insets (colored schemes) represent brightness profiles over gravity-darkened source disks and the projected lens trajectory (black lines). In the residual parts, the perturbations in stellar colors due to the GD and BL effects are shown by dashed curves. The corresponding BL-induced chromatic perturbations are represented by solid curves.