title: Remove default mouseover/focus effect on textboxes
body: <p>I have created a kind of custom <code>TextBox</code> in Expression Blend. I have changed the fill of the background and border to a gradient, and added in a Shadow Effect.</p>
  
  <p>I've noticed that when I mouseover or focus my <code>TextBox</code>, some default behavior/(style?) of WPF takes over and my border is changed.</p>
  
  <p>I was wondering if there was anyway to prevent or stop WPF from changing my <code>TextBox</code>es style when I focus or mouseover it. Is this possible?</p>