AltPlusTab is a portable, freeware app that lets you modify the appearance of the Alt+Tab functionality in Windows 10.Alt + Tab shortcut is widely used to switch between open windows, and AltPlusTab was designed to let you customize the feel and appearance of that menu by tweaking a few basic settings.It can, for example, can dim the background, background opacity of the strip & display an image in the background.Since AltPlusTab is portable, simply extract the files and run it. Make the changes you want and you can forget about it or delete it.