Mango's After Dark is a simple extension with the purpose of giving Night Cit  a more realistic and somber feel.

This is very simple and easy to use. To install it, just download the file you will need to install, and then open it. You will see a small icon that will be added to your menu bar. The first thing you will need to do is select "Mango's Preset.ini" from the dropdown menu.

You will be able to change the brightness and contrast of the image.