Black App Names on iPhone
Perhaps this will help someone. An apparent iOS 26.3 bug (on iPhone 17 Pro) very randomly popped up last week: all of a sudden my solid color wallpaper turned black and my app names turned from white to black.
Fixed the wallpaper by turning off Accessibility / Display & Text Size / Reduce Transparency, but the black app names was harder to fix. In short, under Wallpaper on the app screen I had to switch from a solid color or gradient to a photo.
iPhone 17 Pro