Comparison of grz photometry (top panels) and color transformations (bottom panels) for unresolved, unmasked, high signal-to-noise ratio sources in common between the Legacy Surveys DR7 (DECaLS) and DR6 (BASS and MzLS) releases. In each panel the zero level is shown by a blue dashed line; the solid black lines represent the 25% median and 75% quantiles, and the orange dotted–dashed curve shows the polynomial fit. While there are significant color terms between the different telescope+camera combinations, the median differences are <30 mmag. The zero-point offsets between the subsurveys are due to a change in the approach to absolute calibration between DR6 and DR7; future releases will be self-consistent.