Swift Black is a Substratum theme with over 200 hand-made overlays, using pitch black for backgrounds and preserving the app’s original accent and primary colors where possible. It looks great on OLED screens and also saves you some battery life! Support the following systems: Open the theme in the Substratum app and select your system in the top menu. Then, select the apps you want to use as a theme and proceed with the installation.
Supported Android Devices : [4.0.3–4.0.4] Ice Cream Sandwich – [4.1–4.3.1] Jelly Bean – [4.4–4.4.4] KitKat – [5.0–5.0.2] Lollipop – [6.0 – 6.0.1] Marshmallow – [7.0 – 7.1.1] Nougat – [8.0-8.1] Oreo –  Pie