Edit the “style.css” for your Template under /wp-content/themes/<theme-name>
Regards
/* Begin Typography & Colors */
body {
font-size: 62.5%; /* Resets 1em to 10px */
font-family: ‘Lucida Grande’, Verdana, Arial, Sans-Serif;
background-color: #d5d6d7;
body background=”bgimage.jpg”;
color: #333;
text-align: center;
}
No offense intended but if you couldn’t figure out yet that your “white” background is an image:
http://www.splurf.com/wp-content/themes/default/images/kubrickbg.jpg
then my advice would be to find another theme that is closer to what you want and, most importantly, is easier to modify than the default.
http://themes.wordpress.net
[and please, don’t double post – it will be deleted]