Raphael.js将边框底部添加到饼图图例中

Question

我今天刚开始使用拉斐尔，并想知道是否有 在饼图的图例上添加边框底部的方法

var r = Raphael("pieHolder"),
    pie = r.piechart(320, 240, 70, 
                     [55, 20, 13, 32, 5, 1], 
                     { 
                      legend: ["%%.%% - READ", "%%.%% -UNREAD", "%%.%% -OUTSTANDING", "%%.%% -OVERDUE", "%%.%% -AWAITING APPROVAL", "%%.%% -ON HOLD"],
                      legendpos: "west",
                      legendcolor: '#fff',
                      strokewidth: 0.7,
                      border: 1,
                      bordercolor: 'black'
                   });

提前致谢