Default background in SteamVR

Rygir
Settler

Default background in SteamVR

When you first install and use the Vive it has a background surrouding you that says something like "it's real" and there's a moon and a horizon.

 

I tried a different background once, but now I can't get that original background back! If I choose the default again it puts me in the white background.

 

I want the official Vive background again!