For , stick with High Contrast mode – it’s the most robust and works even before you log into Windows.
For , the Magnifier method (Ctrl+Alt+I) is superior because you can turn it on and off in half a second without any settings menus.
You can set Magnifier to start automatically when you log in. Then, a simple Ctrl + Alt + I becomes your universal invert shortcut.
Now you have complete control over your screen’s colors. Whether you’re protecting your eyes at 2 AM or just want to see what the world looks like in negative, Windows has you covered.