It looks like Material You dynamic theming is part of Wear OS 4

Wear OS 4 sems to be getting Material You dynamic theming, according to a recent report from 9To5Google. Google is keeping the changes to the new version of Wear OS pretty close to the chest, but it did share a couple of things about Wear OS 4 back at Google I/O.

Notably that there will be improvements to battery life and text-to-speech. Wear OS previously got battery life improvements with Wear OS 3. Though it still has a way to go and it seems Wear OS 4 will help push it a little further. Visually, one big design change coming looks to be Material You. The ability to apply dynamic theming was found in the early preview of the update that Google provided through the Android Studio Emulator.

However this isn’t something you can access on your watch for regular use. But that didn’t stop it from being discovered. So if you’ve wondered what Material You might look like on your watch, now you’ll know.

Material You on Wear OS 4 will have a dynamic theme toggle

With Wear OS 4 you won’t have to use the dynamic theming. Rather, there’s going to be a toggle that allows you to turn it on and off. So you can apply the theming when you want to and disable when you aren’t feeling it.

As you’d expect, enabling the toggle ends up pulling colors from your wallpaper and applying them to different parts of the watch UI. such as in Quick Settings. It’s not immediately clear where all these color accents will be present. And according to 9To5Google using a wallpaper from the Play Store turns the colors back to a default blue. So you may need to use one of the pre-installed wallpapers for the dynamic theming to work. That could always change though once the update is actually released to the public.