To change your background go to Control Panel » Customize design » Common templates » Style sheet (CSS) Find this line (located on 2nd line)
Quote
body {background: #1f1f1f; margin:0px; padding:0px;}
This line of code will change all of the website background pages. Find this line (located on 3rd line)
Quote
#contanier {background: url('/.s/t/825/2.gif') center repeat-y #1f1f1f; margin:0px; padding:0px; text-align: center;}
This line of code will change all of the website containier backgrounds.
Replace Blue url with your backgrounds url. If you dont want any image as your background than just erase blue url
if you want to change color of your background change the red code
