Oxygen 8.0 Substratum Theme v58.4 [Patched] – PitchBlack APK [Latest] 0 473 Share Oxygen 8.0 Substratum Theme Introducing PitchBlack for substratum : Material design the way it should be. Oxygen 8.0 Substratum Theme v58.4 [Patched] – PitchBlack APK / Mirror