There are so many fun ways to create the perfect website background. Change colours / Upload your own. With the background options - you can make this website truelly your own.
Under settings, clock on Background.
A properties box will appear. The background comprises of top, bottom, sides and centre of the website. When you click on the block it will have red block around it, which means this is the specific part of the websites background that you you will be changing. You can an an image or change the colours.