OK, for the menu dropdown color you'll have to make a (very) small adjustment to your style's CSS; in main.css change
.dropdown-menu {background: none repeat scroll 0% 0% #4C5358;}
into
.dropdown-menu {background: none repeat scroll 0% 0% #4C5358 !important;}
for the image over the video, you'll probably have to exclude vp1_html5.css from CSS optimization.
fingers crossed ;-)
frank