<p dir="auto">It was a nice addition to the template, and since we are still able to use navbar-inverse I don't see why the btn is a different matter.</p>
<p dir="auto">In the new 3 release btn-inverse has been dropped because no semantic excuse could be made for it. I've got one now: "advanced" or "technical" actions.</p>
<p dir="auto">This is the button for when things get hardcore. Popping open dark backroom controls and analytics spreads. Smokey translucent divs with streams of log printouts. Carbon panels with master delete switches.</p>
<p dir="auto">This is the button that transitions you from the bright light white site to the burnt out night theme of everyone's favorite text editor and Alien Blue.</p>
<p dir="auto">TBH I'm biased, my heart aches to see that blackness missing from the button rainbow. But for reals, I would use this as the "let's get serious" button.</p>