title: Specify row in TableView
body: <p>How I can change background color to red for row if row had timeToReply>15. I can't get timeToReply in rowDelegate. How I can do this ?</p>
  
  <pre><code>TableView
  {
  model: someModel
  TableViewColumn{title:"Time";role: "timeToReply";width: 170}
      rowDelegate: Item {
                  clip: true
                  Text {
                      anchors.verticalCenter: parent.verticalCenter
                      color: {
                          if(timeToReply&gt;15)             //problem
                          {
                              color="red"
                          }
                          else
                          {
                              color="black"
                          }
                      }
                      text: styleData.value
                      elide: Text.ElideMiddle
                  }
              }
  }
  </code></pre>