PhotoShop - Cool Background

1. Make an 800 x 600 in Pixels blank page with a white background.

2. Next make sure your foreground and background colors are set to black and white.

3. Now go to Filter>Render>Clouds, you should get the basic cloud effect.

4. After you've done that go to Filter > Brush Strokes > Dark strokes Use These Settings:

5. Now go to Filter>Distort>Wave - and use the following settings

6. Now All you do is Add colour. To do so Go to Image>Adjustments>Colour Balance. And Fiddle with the colour settings till you find the right colour your after.

Your end result should look something like this:

Additional Notes: From here you can do all sorts of things to it and make it your very own funky Background Hope This Helps.