Left panel: NGVS g-band image after masking background galaxies. Middle panel: Diagram showing the u-band surface brightness vs. u − g colors. The analysis is limited to pixels brighter than μ_g = 25.4 mag arcsec⁻², and the pixels are divided into four tranches according to their u − g colors. The color boundaries between the blue, green, yellow, and red tranches are 0.35, 0.65, and 0.95. Right panel: spatial distribution of the u − g colors, where the colors correspond to those of the tranches in the middle panel. The ellipse in the left and right panels marks the location of the stellar bar.