How can I change a template's background?

Changing a template's background requires some experience in CSS. The file you need to edit (global_style.css) can be found under the 'css' subfolder of the website template you want to edit. You will need to search for the 'body' cluster and edit the hex color code found after the background property.  You can pick a new color code here: http://www.colorpicker.com/