title: Material Design - Wpf - Text Box - Change color
body: <p>I'm using Material Design with Wpf application I have <code>TextBox</code> based on <code>MaterialDesignTextBox</code> static resources </p>
  
  <p><a href="https://i.stack.imgur.com/lJ18u.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lJ18u.jpg" alt="enter image description here"></a></p>
  
  <p>when the <code>TextBox</code> get focus the line color changes automatically to another color  by MaterialDesign:</p>
  
  <p><a href="https://i.stack.imgur.com/pA7aA.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/pA7aA.jpg" alt="enter image description here"></a></p>
  
  <p>How I can control this <code>TextBox</code>'s line color? using setter property? what property needs to be changed in the setter? by the way, I change BorderBrush color for textBox but it didn't work </p>
  
  <p>I appretiate any help</p>