Mistify is a screen dimmer and color balance control for customizing your device's display. Dim your screen beyond your device's default minimum and adjust your red green and blue levels. Mistify also includes a blue light reducing mode that is better for your circadian rhythm. If you are the type of person that uses your device before bed you need this.

Features:
- Screen dimming
- Evening mode (blue light filter)
- In bed mode
- Adjustable color filters (including 7 presets to get you started)
- Create and save your own filters
- A floating settings screen that lets you make adjustments without leaving what you are doing
- Previous configuration recall
- No ads!

Android 8.0+ Permissions
Modify system settings (write settings) - allows the app to dim the status bar and notification drawer on Oreo+ devices. You can run the app without granting this permission but you probably won't be happy.