Descriptions : You don't have to wait until Android 10 (Android Q) is available on your device to use The Dark Mode Mode feature
Dark mode or night mode: This option allows you to apply a filter to the screen to minimize eye strain and reduce the blue light emitted by your smartphone screen.

Required Android Versions : Jelly Bean [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]

Download Night Mode Dark Mode Enabler [No Root] v10 APK Free

Night_Mode-10.apk