Here’s a quick little tutorial showing how to make a combination of gradient and grunge that can look stylish in any color (blue is just an example, feel free to experiment). What you need to know is only the basic tools of photoshop that are available from the left toolbar. And some basic layer skills (blending modes, opacities). This tutorial ALSO works in Pixelmator and works exactly the same so you can duplicate all the steps. Enjoy!