With Android 8.0 Oreo, Google implemented Sony’s Overlay Manager Service (OMS), which the developers of Substratum realized could let users tweak themes without root.

How to Apply a Theme on My Android. Rooted Android phones have access to custom themes that replace your home screen, notification and other system graphics. Themes need to be compatible with the ...

So while Google doesn’t have a native theme engine, Android 8.0 natively supports OMS themes, which means that it’s likely that most phones with AOSP-based firmware will support themes ...

As part of Android 14 DP2, Pixel phones have gained a new monochrome Material You theme and are preparing to add custom lock screen clocks.