Twilight Night Q Dark is one of the best (if not the best) theme for Substratum Theme Engine with dark colors.
It has a lot of layers which will make your Android a real work of art and bring your apps to a single color style.
Everything that you'll see in this theme is the result of hard work in finding the perfect combination of colors with a dark shade and adapting it to different apps.
Theme's soft color scheme helps to concentrate better on screen content.

More than 100 overlays, the entire list can be viewed here - https://vk-cc.ru/sOZQn

Use the Substratum Theme Engine application to apply the theme
Your rom should support Substratum Theme Engine ✔

[Substratum] Twilight Night Q Black - https://play.google.com/store/apps/details?id=aliceteam.theme.twilight.night.black

Installation for Android Oreo and Pie
• Select and configure overlay options
• Build and enable
• Reboot your device
• Go into overlay manager and enable installed overlays

❎ Only Oreo 8.1 & Pie 9.0
❎ Oxygen OS, Samsung, LG, HTC, ASUS is not supported

➕ Google + - https://vk-cc.ru/rArRu