I was looking at a post
http://www.zen-cart.com/content.php?...-white-or-grey

and i want to change the background and here is the solution

body {
margin: 0;
font-family: verdana, arial, helvetica, sans-serif;
font-size: 62.5%;
color: #000000;
background-color: #fff; /* this is white */
/* background-color:#ccc; this is gray */
}
I've been ther in the past but I can not remember where I went to edit the .css file. can anyone help me on where it is?