For now, we can only do it manually.

There is a problem with doing it by tag or category witch would conflict each other when they are overlapping.

I think Jake is working on a solution for that but for now, just manual.

Remove the two <br>’s below the title and add this to your CSS file:

html body#pages.show div#s-content.s-rustic ul.slides li.slide div.wide div.container div.sixteen{
background: none repeat scroll 0 0 rgba(0, 0, 0, 0.5);
}