title: how to get fully dark kibana?
body: <p>I'm starting with kibana and I see a lot of pictures where kibana has different visual than on official web site.
  I like it more but I can't find how to switch on it.
  You may think that I'm talking bout black dashboard theme but it's not exactly what I'm looking for.
  On pictures I saw kibana seems to be fully dark and even have different layout.</p>
  
  <p>Let me show</p>
  
  <p><a href="https://i.stack.imgur.com/br9YG.png" rel="noreferrer"><img src="https://i.stack.imgur.com/br9YG.png" alt="the tool bar"></a></p>
  
  <p><a href="https://i.stack.imgur.com/4Dp94.png" rel="noreferrer"><img src="https://i.stack.imgur.com/4Dp94.png" alt="dark introduction page"></a></p>
  
  <p><a href="https://i.stack.imgur.com/j2SH9.png" rel="noreferrer"><img src="https://i.stack.imgur.com/j2SH9.png" alt="Query and filtering buttons"></a></p>
  
  <p>Hope now it's understandable what I mean.</p>
  
  <p>If so, can someone help me and tell how can I get this fully dark kibana ?
  or tell me where I'm wrong</p>