title: Qt TabWidget Each tab Title Background Color
body: <p>This is the original Tabwidget without setting title background color</p>
  
  <p><img src="https://i.stack.imgur.com/PEzzW.png" alt=""></p>
  
  <p>My customer ask me to do something like this;
        Set different background colour for title</p>
  
  <pre><code>All - Yellow
  purchase - light blue
  POS Sales - light green
  Cash Sales - Pink
  invoice - light purple
  </code></pre>
  
  <p>I have try the SetStyleSheet like:</p>
  
  <pre><code>     QTabBar {
            background-color : Yellow;
       }
  </code></pre>
  
  <p>But all tab Color changed
     Somebody know how to setting each QTabBar background color?</p>