Focus || Substratum Theme (Android Oreo/Nougat)

Don't apply status bar icons overlay on Oreo, because they can only partially be themed at the moment and therefore some icons disappear when that overlay is applied on O! Self-made icons. The Theme works on: Android Nougat Custom Roms. Android Oreo 8. 0 Stock and Custom Roms. Android Oreo 8. 1 Stock and Custom Roms.