Recognized Contributor MSF Jarvisinformed us that a new app called “ThemePicker” was uploaded to AOSP with the release of the Android 10 source code. Once installed, the app appears as “Styles & wallpapers” in the app drawer or in the Pixel Launcher’s long-press context menu. The strings for the app tell us that this app will allow the user to customize the lock screen/ambient display clock face, the Pixel Launcher grid size, the lock screen and home screen wallpaper, and the “style” (which includes the accent color, icon shape, and font.) You’ll also be able to mix and match from the available options to create your own style, which you can even name. Our prior analysis of Android 10 revealed that the clock faces include an analog clock and a bubble stretch clock (the type/text clock face was sadly removed during development.) Lastly, I spotted code for customizing the icon pack, though I’m not 100% certain if that’s distinct from customizing the icon shape.

After a few hours of tinkering, we were only partially able to get the ThemePicker app up and running. Fortunately for us,Recognized Developer luca020400 spotted a commit with a link to a (likely not intentionally) public Google Photos album that reveals the UI of Android 10’s theme manager app. The image to the left (below) shows the “Wallpapers” context menu item in the Pixel Launcher replaced with “Styles & wallpapers,” while the image to the right (below) shows the most up-to-date UI of the app that we can find. Using our analysis of the Pixel Themes app from Android Q beta 2, we believe that the 3 non-default pre-installed themes will apply the following changes to the Android 10 UI:

  • Crayon: Purple accent color, Arbutus font, Circular/Teardrop icons
  • Collage: Green accent color, Arvo and Lato font, Filled icons
  • Ash: Black accent color, Rubik font, Rounded/Squircle icons

We previously extracted the wallpapers shown in this preview so anyone can download them here.