Darkmode.js

https://darkmodejs.learn.uno/

This library uses the css mix-blend-mode in order to bring Dark-mode to any of your websites. Just copy paste the snippet and you will get a widget to turn on and off the dark-mode. You can also use it without the widget programmatically. The plugin is lightweight, built in VanillaJS. It also uses localstorage by default so your last setting will be remembered !

web