old_contents: angular.module("HydroZone", [
      'ngMaterial'
  ]);
  
new_contents: angular.module("HydroZone", [
      'ngMaterial'
  ])
  .config(
      [
          '$mdThemingProvider',
          function($mdThemingProvider) {
              $mdThemingProvider.theme('default')
                  .primaryPalette('indigo')
                  .accentPalette('cyan');
          }
      ]
  );
  
subject: Add Material Theming