How to Use Color Balance in tvOS 14.5

Yes, Dolby Vision is just fancier HDR. Yes, Match Source will work just fine. If the content supports HDR/Dolby Vision, it will kick on automatically, which is what you want. Otherwise, you get forced pseudo HDR that looks weird. Color Balance won’t be an option, or the calibration will fail if any HDR is enabled, since HDR does its own thing in regard to color.