Changing the background color of your website is one of the most common customizations WordPress users ask for on the forums. The answer
Background Image Tutorials
The tutorials in this archive relate to usage and modification of background images in Genesis child themes. You'll find code which helps you add/modify and customize default & custom background images. You'll also find more tutorials relating to background images which aren't tagged with layout by using the search widget in the sidebar. All code as well as support for PHP code is guaranteed for members.
You can easily change the background color on a specific page, post, category or archive once you find the i.d for that page. Another way