Forced dark mode flag, add day-night auto on/off

The forced dark mode in flags works pretty great, but it would be better if we could set time when it on, so it wouldn’t be on during the day.

There are some extensions that change the websites to dark AND have the auto on and off option… unfortunately the way they do dark mode is just change only colors that are currently on screen, not render the entire website dark. they do it in a such a primitive way, I can see the normal white website for a moment when scrolling, which is very annoying.

I only found flags that works great, but theres no timer