Start screen in Windows 8.1
Windows 8.1 boasts more colours and backgrounds for the Start screen (including those with natty motion effects, more on that shortly). If you're already familiar with Windows 8 you'll know more or less what to expect from the customization options. Windows 8.1 offers up a wide colour palette to daub your Windows… more experience with. But unlike its previous incarnation, Windows 8.1 goes that little bit further. There are no half-measures to be found here, all of 8.1's background and themes are suitably wacky and garish. Just check out some of those designs... Happily you can always opt for your default Windows Desktop background if you prefer.

Now you can also use Desktop background image as your start screen background image. In windows 8 this option was available in Change Pc Settings > Personalize Option , But in windows 8.1 this option is missing,here you will see only option to change Lock Screen Background images, account pictures or picture passwords images.

Let me tell how to do this in windows 8.1

  1. Open start screen
  2. Drag your mouse to right corners or your screen till it will open Windows Charm Bar Or Press Windows + C Button (Be sure your start screen is open)
  3. Click on Settings
  4. Then Personalize
  5. Here you can choose your favorite colors/natty motion effects.