I’m using BSS 2.1.2 and the default navbar coloring is white. The inverse is black. They have it correct. I checked the non-BSS css http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css and searched for “.navbar-inverse” and .navbar-inverse{background-color:#222;border-color:#080808} is correct.
Sorry forgot to mention that the navbar that I added in the BSS change from white to black in the tool and in preview.
Is it possible @evan8ster that you might have the class misspelled for navbar-inverse?