#nav  {
background:none repeat scroll 0 0 #888888;  <<change this colour
height:34px;
position:relative;
z-index:1;
}

.s-c-s .ctr-color2, .s-c-s .ckl-color2, .s-c-x .ckl-color2, .x-c-s .cdr-color2 {
background:none repeat scroll 0 0 #D4DEE3;  <<change
}