Teorex FolderIco - FolderIco allows to change the color of Windows folder in one click!
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Folder Marker - Change folder color in two mouse clicks for easy at-a-glance identification.
Variety Wallpaper Changer - Variety is a wallpaper changer for Ubuntu which is featureful, yet slim and very easy to use.
CustomizerGod - It lets you customize almost any part of Windows according to your taste.
Muzei - Muzei is a live wallpaper that gently refreshes your home screen each day with famous works of art.