Built-in dark mode for web contents

[batata]

I love extensions like Dark Reader that automatically transform any website with a dark theme. The way they do this is by injecting many new styles into the DOM, it works but there is two main drawbacks to this method :
- there's a latency that makes contents blink
- it reduces performances on some websites by a lot

So It would be great if there could be a built-in low level solution (directly in web render?) that would swap colors on the fly without editing the page styles and thus would solve the two aforementioned issues.

[orderofthetriad]

also a low contrast mode in addition to this, the ffffff white of a webpage background strains my eyes with a low risk of migraines and the fffffff white of the text in dark mode on a black background almost always triggers migraines for me! low contrast is so vital for some people and web designers at large are IGNORING that need. I barely put up with using this website because of the white background. if it switched to dark mode i wouldn't be able to use it period. In fact, I gotta go because I feel a migraine coming on now.

[hi_bye]

maybe this will be part of Nova?