With the downside of fingerprinting yourself it seems, would you be willing to share the wallpaper?

It isn't special, merely a blue/green colour with mild dithering.

It is a little like looking at the morning sky.

It's on all phones, desktops, etc. And if I were to give it to you? Well. Maybe you're the NSA, maybe I'll be pulled off the street, thrown into a chair, and in a NDA-drugged, mildly confused state, be told "look, it is your desktop, see your familiar backgroud? You should enter your password."

No sir, I will not disclose my background image!! Sneaky! Good try though.