You know how YouTube and StackOverflow has that option to use the device theme, among a few other websites? Well this userscript aims to bring that same functionality to Twitter, though in a less obvious form. Once this script is active, it will monitor changes in the device theme, and change the twitter theme accordingly. This is especially handy is you use something like "Auto Dark Mode" on Windows 10, or use MacOS's default auto theme mode that coincides with sunrise and sunset.
