title: Angular Material md-card-header background
body: <p>I am developing a small AngularJS application using angular-material. The problem is I cannot figure out how to properly set the background-color of the <code>md-card-header</code> using the color palette defined in my config.</p>
  
  <pre><code>$mdThemingProvider.theme('default')
      .primaryPalette('blue')
      .accentPalette('pink');
  </code></pre>
  
  <p>Basically I want to set the primary color as the background color of the card header. I could of course copy the RGB value, create a class and set the color using this class. However, I would loose the benefit of changing the theme at runtime or at least I would have to manually change the color whenever I change my theme.</p>
  
  <p>How can I set md-colors to any element, especially the md-card-header?</p>