How to use the angular-highcharts.Highcharts.getOptions function in angular-highcharts

define(function(require, exports, module) {
    var _ = require('_');
    var Highcharts = require('angular-highcharts').Highcharts;
    var COLORS = Highcharts.getOptions().colors;

    var IndexController = ['$scope', '$http', '$modal', function($scope, $http, $modal) {

        // 获取总体统计数据
        $scope.getDashboard = function() {
            $scope.dashboardXHR = httpGet('/admin/dashboard', function(data) {
                $scope.dashboard = data;

                // 如果启用了 ga chart
                if ($scope.dashboard.ga_enable) {
                    $scope.getTopPages();
                    $scope.getDailyVisit();
                    $scope.getBrowser();
                }
                else {
                    $scope.nowDate = Highcharts.dateFormat('%m月%d日', new Date().getTime());