Highcharts 单色饼图

一代码
<html>
<head>
<meta charset="UTF-8" />
<title>Highcharts 单色饼图</title>
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="http://code.highcharts.com/highcharts.js"></script>
</head>
<body>
<div id="container" style="width: 550px; height: 400px; margin: 0 auto"></div>
<script language="JavaScript">
$(document).ready(function() {
   var chart = {
       plotBackgroundColor: null,
       plotBorderWidth: null,
       plotShadow: false
   };
   // 标题
   var title = {
      text: '2014年浏览器份额'
   };
   var tooltip = {
      pointFormat: '{series.name}: <b>{point.percentage:.1f}%</b>'
   };
   var plotOptions = {
      pie: {
         allowPointSelect: true,
         cursor: 'pointer',
         dataLabels: {
            enabled: true,
            format: '<b>{point.name}%</b>: {point.percentage:.1f} %',
            style: {
               color: (Highcharts.theme && Highcharts.theme.contrastTextColor) || 'black'
            }
         }
      }
   };
   var series= [{
      // 饼图
      type: 'pie',
      // 浏览器份额
      name: 'Browser share',
      // 数据
      data: [
         ['Firefox',   45.0],
         ['IE',       26.8],
         {
            name: 'Chrome',
            y: 12.8,
            sliced: true,
            selected: true
         },
         ['Safari',    8.5],
         ['Opera',     6.2],
         ['Others',   0.7]
      ]
   }];
   // 设置单色并为所有饼设置默认主题
   Highcharts.getOptions().plotOptions.pie.colors = (function () {
      var colors = [];
      var base = Highcharts.getOptions().colors[0];
      var i;

      for (i = 0; i < 10; i += 1) {
         //以一暗色开始并以亮色结束
         colors.push(Highcharts.Color(base).brighten((i - 3) / 7).get());
      }
      return colors;
   }());

   var json = {};
   json.chart = chart;
   json.title = title;
   json.tooltip = tooltip;
   json.series = series;
   json.plotOptions = plotOptions;
   $('#container').highcharts(json);
});
</script>
</body>
</html>
二运行结果
Highcharts 单色饼图

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