Color-magnitude diagram for the bases of Types 1 and 2 and for entire Type 3, 4, and 5 light curves. Light blue points indicate SMC B stars in the Kourniotis et al. (2014) sample. For sources in our sample, error bars show one standard deviation in each axis for the given full light curve or base. Translucent points indicate that the corresponding source required manual calibration of OGLE epochs, entailing an additional source of uncertainty in both axes.