Histograms of absolute colors (H_g − H_i, H_g − H_r, and H_g − H_z) from E. O. Ofek (2012) (top) and F. S. Ferreira et al. (2025) (bottom), shown separately. In each panel, the p-value of the Hartigan dip test is indicated. In all cases, the p-values are well above 0.05, indicating that unimodality cannot be rejected. While H_g − H_i shows the strongest visual hint of bimodality, it remains statistically consistent with a unimodal distribution.