title: TextBox Caret Styling
body: <p>I've found a few things on setting CaretBrushes in WPF4, but has anybody actually ever changed the caret itself?</p>
  
  <p>What I'd like to do is use the OVERWRITE caret in INSERT mode. I've seen a <a href="http://weblogs.asp.net/jdanforth/archive/2009/09/29/custom-caret-cheat-in-wpf-textbox.aspx">hack from .Net 3.5 times</a>, but it is unperformant and lacks behind actual cursor movement...</p>
  
  <p>It would be great if the Caret had a Template - That would be consistent with the whole WPF idea...</p>
  
  <p>Any advice?</p>