Read original post by Mary Branscombe at Tech Radar
When the Windows 8 beta arrives at the end of February, it will have some widely requested features for killing Metro apps without going to the Task Manager, for navigating using a mouse rather than touch and for doing more with gestures.
You'll also be able to change that overpowering green background. But Windows 8 director of communications Chris Flores points out to TechRadar that you wouldn't want a photograph as the background of the Metro-style Start screen.