code: function getThemeByFile(file) {
          var path = file._path;
          return _.find(loadedThemes, function (item) {
              return item.file._path === path;
          });
      }
docs: @private
  Will search all loaded themes for one the matches the file passed in
  
  @param {File} file is the search criteria
  @return {Theme} theme that matches the file