Dark mode, night mode, light-on-dark design, or whatever you want to call the version of computer content that doesn't feel blindingly bright at night...
Don't wanna be that guy, but these template news-article openings always make my brain hurt. Come on, as if everyone has ever called it anything else than "Dark mode".
They used to be also fascinated by plastic.
I bet their smiles would not last long realizing that the 5g bag of pretzels has 2g of plastic (and that's just the tip of the plastiberg).