Color-color diagram (u − r)_G versus (g − i)_G of the 109 high-quality white dwarfs at distance d < 100 pc in J-PLUS DR3. The solid lines show the theoretical loci for Η-dominated (orange) and He-dominated atmospheres (magenta). The gray scale shows the most probable model that describes the observations. The blue probability distributions above and to the right show the (g − i)_G and (u − r)_G projections of the data, respectively. The projections of the total, H-dominated, and He-dominated models are represented by the black, orange, and magenta lines. The values of the filter-dependent parameters σ_int and ∆χ_WD are indicated in the main panel.