if (len == 1) {
total = values[0];
- paper.circle(cx, cy, r + opts.barwidth / 2).attr({ fill: opts.colors && opts.colors[0] || chartinst.colors[0] || "#3E66BC" });
- paper.circle(cx, cy, r - opts.barwidth / 2).attr({ fill: opts.background || "#F0F4F7" });
+ paper.circle(cx, cy, r + opts.barwidth / 2).attr({ fill: opts.colors && opts.colors[0] || chartinst.colors[0] || "#3E66BC", "stroke": "#fff" });
+ paper.circle(cx, cy, r - opts.barwidth / 2).attr({ fill: opts.background || "#F0F4F7", "stroke": "#fff" });
} else {