I've used the same wallpaper on every computing device I've owned, for the last 26 years.

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.