bmxnskate Please elaborate exactly if you wish to refer to having similar kind of background appearence behind header section in which logo and menu resides as you already have the similar kind of menu setup/positioning as seen in demo site ?
If referring to background appearence, Try add this in custom.css file
.t3-header-wrap{position: absolute;z-index: 1000;top: 0;}
.t3-header-wrap .t3-header{background:transparent !important;}