PitchBlack S – Samsung Substratum Theme Oreo/OneUI v34.9 Apk: PitchBlack S – Samsung Substratum Theme Oreo/OneUI v34.9 Apk at Andropark.info, Attention: This theme is only for Samsung devices running Oreo and Pie (One Ui) Substratum theme engine must be installed to use this application Pitch-black S is the result of perfecting the art of materialism,