title: Highlighting the SEND button in MFMessageComposeViewController
body: <p>I have generated an <code>MFMessageComposeViewController</code> to send a preconfigured SMS message, and I now want to draw the user's attention to the send button.  The user has already initiated the &quot;send message&quot; process from within the app, but they must then press the send button within the <code>MFMessageComposeViewController</code> to actually send the message.  The send button in the standard <code>MFMessageComposeViewController</code> is &quot;hidden away&quot; in the bottom corner of the message body where some, not so tech-savvy users, struggle to find it (a fact not opinion, as I have had test users ask what to do next)!</p>
  <p>Apple does not allow this message compose interface to be modified, except for certain exceptions. I have looked into the <code>UIAppearance</code> protocol, which provides limited options to modify aspects of the <code>MFMessageComposeViewController</code>, but the options do not apply to the send button.</p>
  <p>I have looked into the documentation, and there are options to highlight or focus on interface objects using the accessibility options, but I can not find a way of linking this to the send button within the <code>MFMessageComposeViewController</code> where I have limited access to the UI components.</p>
  <p>How do I highlight the send button within the <code>MFMessageComposeViewController</code>, or access the button so that I can draw the user's attention to it?</p>