You must use Custom Nougat ROM (7.1.x only) which has full WHO support for this theme to work on. DOES NOT OPERATE ON A STOCK ROM !!! You must also be fully rooted or a rom with uprooted engages and have the substrateum app.
+ Android system
+ PSBA MusicFX
+ Calculator
+ Chrome Browser
+ DU Clock
+ DU Updater
+ Contacts
+ Dialer
+ the document user interface
+ Eleven Music Player
For More Info Google Play
Supported Android
varies with device
Download Substratum Valerie 2.2 Patched APK For Android