You have a webpage that needs a background. A basic gradient does the trick – but that’s so, well, basic. Try this:
Open photoshop, click gradients, then – and this is the key – set the mode to “difference”. Its a little dropdown at the top. Now make a few random gradients. After two or three clicks you should see something cool appear. Pick a color (just one works fine – something light and muted) and experiment away!