title: WPF: Referencing app-wide resources in code-behind
body: <p>I have made my own custom converter which given a string returns a <code>Brush</code>. Now I'm able to return constant brushes such as <code>Brushes.Red</code> etc., but I really want to use my own colors which I have defined in an application-wide resource.</p>
  
  <p>How do I reference application-wide resources from my own custom converter class? I'd use <code>FindResource</code> but as I said, this is from my own converter class, not a window or control.</p>