Famaritana: Swift Dark is a Substratum theme with 200+ handcrafted overlays, using a select shade of dark gray for the backgrounds, keeping the apps' original accent and primary colors where possible.
Dikan-teny Android takiana: Sandwich Ice cream [4.0.3–4.0.4] - Mofomamy [4.1–4.3.1] - KitKat [4.4–4.4.4] - Lollipop [5.0-5.0.2] - Marshmallow [6.0 - 6.0.1] - Nougat [7.0 - 7.1.1] - Oreo [8.0-8.1]