They're all beautiful.

Here's a .zip with all of them. Only 11 so far it looks like.

If anyone was wondering they incrementally increase the number in the filename

so this https://www.gstatic.com/cast/images/...ackground1.jpg
would come before this https://www.gstatic.com/cast/images/...ackground2.jpg
Attached Files
File Type: zip gcastbackgrounds.zip - [Click for QR Code] (6.73 MB, 6138 views)
Motorola Razr original -> iPhone 3G -> iPhone 4 -> Galaxy S2(i777) -> Galaxy S3(i747) -> Galaxy S4 active(SGH-i537)