Here's the lock screen. The home screen wall is different. Came from a site. I'll have to look for it.
If you want the home screen, it's hard to explain. It's on this site. Find the "Black Ul" section. Then scroll down to "Mysterious wallpaper 2nd Lab. Tap on that. Then scroll down to the orange/black.
You will have to turn it upright with the orange at the top. I do it in Camera+.
Also you need to zoom it upwards on the wallpaper set up screen. Yeah, kind of complicated. LOL
The site:
http://heyeased.weebly.com/black-ui.html
Or use this one. But it doesn't show the black folders and dock.
Note: Some of these wallpapers on this site don't work well with iOS 10.2. Fine on 10.1.1.