Blackout

Global settings, appearance tuning, schedule, and per-site overrides.

Global

Enabled everywhere

Brightness (100%)

Contrast (100%)

Sepia warmth (0%)

Grayscale (0%)

Keep images/videos in color

Automatically switch dark mode on/off by time of day (applies to sites without their own override).

Enable schedule

Dark from

Dark until

Sites you've customized from the popup. Remove one to fall back to the global setting.

Site	Enabled	Brightness	Contrast

Export settings as JSON

Import settings from JSON