$(function () {

    var data = [];
    var series = 3;
    for (var i = 0; i < series; i++) {
        data[i] = {label: "Series " + (i + 1), data: Math.floor(Math.random() * 100) + 1}
    }

    $.plot($("#donut-chart"), data,
        {
            colors: Slate.chartColors,
            //colors: ["#0A69C0", "#3C4049", "#777", "#AAA"],
            series: {
                pie: {
                    innerRadius: 0.5,
                    show: true
                }
            }
        });

});