Hi there,
I have setup your special style ( green) for your menu item.
But you can use a css style only for menu item with a link and not for a text separator, see image attached.
Look to your custom.css how it works

/* Navbar Green*/
.uk-navbar-nav li a.green {background:green}
/* Hover*/
.uk-navbar-nav li a.green:hover {background:blue}
/* Active Link*/
.uk-navbar-nav li.uk-active a.green {background:blue}

Ok, gotcha. Learned something new - thank you I'm assuming that your menu is not capable of loading modules into the dropdown? Please confirm.

And, if I want to do away with the default menu and insert another into the 'menu' position?
Again.. unpublishing it and publish different menu module into 'menu' position does NOT work...

Thanks again,
Gina G.

In case someone else is looking for this:

To load a module inside a drop down -
1. download Modules Anywhere (free - through web installer)
2. Define type 'separator'
3. Define Menu Title as {module *module ID*}

Voila

More easylier is this one:
>> Just add a module to the menu position

Yes, that will add it to the end of the menu (in level 0)... not in a drop down