Changing blue background color on "wallpaper"

Hotskates: Another cool thing you can do is go to Start/Programs/Accesories/Paint. First thing to do is choose the bucket tool and on the bottom pick any color, left click the screen with the bucket to flood the page. Click on Colors on the top bar and open that, then click custom colors. You can move your mouse on the rainbow of choices till you like what you have. Click okay. Then use the bucket tool again, to flood the page with that color. Under File click save and save it anywhere. (Even Documents) Then under File will be a choice to set it as a wallpaper. I think you want to choose the one that says tile. If you want it back, right click your desktop anywhere, go to properties, background and you can set it to any of the options there. You can make your own squiggles and stuff with the other tools. Have fun.