title: Editing MessageKit layout
body: <p>This is my first time using MessageKit. I am trying to customize my view but I can't find any helpful information on how to do so like setting insets and changing color of background. </p>
  
  <p><a href="https://i.stack.imgur.com/DTij3.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DTij3.jpg" alt="My current layout"></a></p>
  
  <p>I want to start the view from below the title bar and change the background color and the background color of the messages. </p>
  
  <pre><code>func backgroundColor(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -&gt; UIColor {
          return isFromCurrentSender(message: message) ? UIColor.myGold : UIColor.headingGold
      }
  </code></pre>
  
  <p>Any help will be appreciated. </p>