FGDesktopLoupe
FGDesktopLoupe is a desktop dimmer that will allow you to use a spotlight beam that follows your mouse pointer to focus on a part of the screen.
FGDesktopLoupe will allow you to easily set the size of the spotlight and the color of the dimmer background.
You can use CTRL ALT to open the settings window and CMD ALT to toggle the dimmer effect on or off.
