Due to a change in Google's Android P, the firm's mobile operating system no longer supports custom overlay modifications like Substratum.As we reported, Google's Android P broke cover yesterday with a developer preview released to users of the Pixel series of devices.The update came with a number of changes including improvements to security and notifications. Unfortunately for some enthusiasts, Google's improvements to security also came with a hidden cost, the loss of custom theming functionality.For context, in Android 8.0 Oreo, Google added support for an Overlay Management Service in stock Android, allowing devices running Oreo to be themed. This feature was not exposed to consumers, and only enthusiasts who used a series of ADB commands were able to take advantage of the change.The developers of the Substratum theme engine created an Andromeda framework for Android Oreo which allowed users of the mod to apply custom themes to their devices relatively painlessly. Users co...