To get a sleek, modern dark mode that looks like Windows 10 or 11, you will need to patch your system files to accept unofficial visual styles. Step 1: Patch your system
Your desktop background turns black, windows become dark gray, and text becomes neon green or white. This is technically a dark theme for Windows 8.1 , but it is crude. It removes transparency, breaks some modern UI apps, and changes link colors aggressively. dark theme for windows 8.1