This wallpaper of the week is a computer generated illustration showing the sun setting over a horizon of blues and oranges
Mountains below fade into darker colors. This is one of those images that looks so much better on a screen than the screenshot. The reddit version (link below) fits beautifully on a triple monitor display. It also scales down quite nicely. Icons show up well on this background.
This wallpaper comes in a range of image resolutions including mobile devices and tablets. Use the installation instructions for your specific device or browser.