Are you looking for a quick and easy way to make the screen totally red during your astronomical nights?
With "Eye Saver" you will be able to do it in a very fast, simple and free way, without having to go crazy with the windows theme and night light settings and, with a simple click!
1) go to the site https://www.eye-saver.net/ download and install the program;
2) open the window setting;
3) in Mode select "healt" and set the parameters you see in the image below:
Brightness: 120% - Bluefilter 0 - and "Grayscale" ...Enjoy!