You may be one of those people (like me) who prefers web content rendered in dark mode. Often the preference for the choice is due to less eye strain and glare. Light text on dark background is much easier on the eyes. There’s also another thing to consider: for those who use AMOLED screens, darker pixels means using less energy for displays. My preference is for the first reason – it’s a lot easier on my eyes when I spend hours in front of a computer as both a staple in my profession and for my hobby – that’s a LOT of screen time! (and assault on my eyes).
Fortunately, the solution is a simple one (if you’re a Chrome user). You can enter this string in the URL field: chrome://flags/#enable-force-dark and choose Enable. The result is pretty darned sweet!