"Monochromatic" & system "Night Light" feature

[shuvashish76]

Monochromatic feature

It turns the device screen to black&white using built in monochrome feature in android Android 5 or later.

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This is not device "Colour correction" or "Colour inversion" from device Accessibility settings.

1. Colour corcorrection
   
   

2. Colour inversion
   This changes black/dark colour to white & vice versa. Camera, Gallery etc apps are also affected. But after you turned it off the photos or screenshots with colour inversion mode show full colour. So it just show colour inversion on the screen, it's not like those camera apps which change "white_balance/scene_mode/colour_effects" etc...

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My feature request is similar to apps like Monochromatic & DetoxDroid.
Mostly like Monochromatic app because its intention is to "makes use of the built-in black and white device feature to provide a blue-light filtered screen without the use of an overlay screen, to help relax your eyes at night and disincentivise phone usage".
Though DetoxDroid use same feature but its purpose for grayscale is different.

Both apps need android.permission.WRITE_SECURE_SETTINGS permission. (supports both rooted & non-rooted devices)
Which can be turned on using adb commands or using apps like AppManager, PermissionManagerX etc...

screenshot from AppManager👇🏿

Monochromatic feature is like colour inversion mode which also affects to camera & gallery type apps, but taken photos/screenshots changes back to colour mode after you turn it off.

Thankyou🙏🏿

[shuvashish76]

Control system Night Light

screenshot from system settings👇🏿

With android.permission.WRITE_SECURE_SETTINGS permission (both rooted & non-rooted devices) it's possible to control system inbuilt bluelight filter feature directly from Red Moon app.

screenshot from SystemUI Tuner app, source code: https://github.com/zacharee/Tweaker
(though Monochromatic app has this feature, it's buggy. Sometimes turning it off doesn't turn off the system Night Light. Thats why SystemUI Tuner is perfect example here. It works.)

System inbuilt Bluelight filter control the whole screen even Navigation Bar & Status Bar (+notification area) which is currently missing in Red Moon.

Users don't need extra apps & extra quick sething titles with these 2 features (monochromatic & night light) merged into Red Moon app.

Thankyou🙏🏿