How to use color of my choice for each bar in a bar chart using chartjs?

I want the bars in this graph to have different colors, but of my choice. Here is my code. Please Help.

            var ctx = $("#myBarChart").get(0).getContext("2d");
            var data = {
            labels: ["a","b","c","d","e","f","g"],
            datasets: [
                {
                    label: "My First dataset",
                    /*fillColor: "rgba(84,255,159,1)",
                    highlightFill: "rgba(84,255,159,0.75)",*/
                    data: [5,3, 4, 2, 1, 3, 1]
                    },
            ]
        };



        var myBarChart = new Chart(ctx).Bar(data);
        var width = $('canvas').parent().width();
            $('canvas').attr("width",width);
            new Chart(ctx).Bar(data);