Royale Theme Wallpaper for Windows XP Learn how to create the popular Windows XP Royale theme in this tutorial.
Open a new file that would have
800x600 px and
72 dpi.
After that we should create the background turn by turn, choosing first the instrument from here

The first stage includes creating the background for the lowest half:
Blending Options-Gradient Overlay
Gradient’s parameters:

The second stage includes representing the background for the upper half:
Blending Options-Gradient Overlay