Apple just released iOS 14 developer beta 7 for iPhone today, Thursday, Sept. 3. The new update (18A5369b) features new wallpaper options. Now, you can choose any color background for the rainbow wallpaper, and iOS will turn the background black when you enable dark mode. These new dynamic wallpaper options replace the old static colors, meaning you won't be able to see a color background on your rainbow wallpaper with dark mode enabled. Of course, this is beta software, so Apple could change things down the road. You'll find the new options in the "Stills" section of your Wallpaper settings... more