The Shining wallpaper is a nod to one of the greatest horror movies of all time: Stanley Kubrick's The Shining. There are variations of the background available for most iOS devices.
The brightness and contrast of the original pattern are greater, which makes it difficult to separate foreground and background elements, so I tweaked both a bit. It's probably still a bit strong for the home screen, but I find it works well for the lock screen.
If this isn't enough of a Shining fix for you, be sure to check out The Overlook Hotel; there's a staggering amount of The Shining content there. Also well worth a visit is Coudal Partners' Stanley Kubrick archive.