Swift Black is a Substratum theme with over 200 handmade overlays, using pitch black for backgrounds and preserving the app’s original accent and primary colors wherever possible. It looks fantastic on OLED screens and also saves you some battery life! Support the following systems: Open the theme within 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