On the Xbox user voice website, under Home and Settings category, below one is the second more voted feature.
The Ability to Customize/Personalize your Whole DashboardIt would be great if everyone could customize and personalize there own dashboard including:– Imaged Backgrounds– Latency of Windows/Tabs– More Color Choices for Windows/Tabs– Different Home Screen Layouts– Screensavers– More Pins
Xbox team is always known for listening to feedback from its customers. In an interview to TiC Podcast, Xbox chief Phil Spencer confirmed that Microsoft is working on custom backgrounds, themes and screenshot functionality.
“You will see , I’ll announce it here, I was told themes and background pics are something that we are working on, and screen shots!”
The above image is a concept of how Xbox One dashboard will look with custom backgrounds. Also, you can check out this old concept video from PrimeGhost548.
Source: Xboxmad.net
