I actually just found it, Jason. The grid box area - above and below each product image. I just put all the background colors to #FFF and remarked the
/*-moz-border-radius: 6px;*/ /* FF1+ */
/*-webkit-border-radius: 6px;*/ /* Saf3+, Chrome */
/*border-radius: 6px;*/ /* Opera 10.5, IE 9 */
and it seems to be okay now. The client just wanted everything white, without the heavy borders.