Left panel: Light curves of SDSS J0837 in the g- (green dots) and r-bands (blue dots) overlaid with best-fit JAVELIN models (green and blue shadows). Inset: g − r color evolution, with a vertical line marking MJD 59600. Right panels: Time lag histograms for the stabilizing (top), declining (middle), and entire (bottom) phases. Green bars show the posterior distributions with Gaussian-like fits (blue curves), while dashed red and orange lines indicate the peak positions and 1σ uncertainties, respectively.