March 08, 2013, 5:47 PM — Here's how you can customize the background and color of the Windows 8 start screen.
1. Press the Winkey+C to see the charms bar.
2. Click the Settings charm.
3. Click Change PC Settings.
4. Click Personalize.
5. Click Start screen.
6. Choose your background image and color.
For more, see the original article at the link below.
6 Ways To Customize the Windows 8 Start Screen | How To Geek