From the dock to grub screen, GNOME can be customized to your liking.Add the login screen to this list as a new tool called GDM Settings allows you to change the looks and tweak functionalities of the login screen in GNOME.You can change the wallpaper, theme, icon, time format, top panel items etc. You can also enable tap to click on the login screen (I love this one) among other things.In this tutorial, you'll see the steps for installing this tool and how you can use it to change...