Palette for FusionCharts

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js" type="text/javascript"></script>
<script src="https://static.fusioncharts.com/code/latest/fusioncharts.js" type="text/javascript"></script>
<script src="https://static.fusioncharts.com/code/latest/fusioncharts.charts.js" type="text/javascript"></script>
<div id="chart_div"></div>

JavaScript

$(function () {
   new FusionCharts({
      renderAt: "chart_div",
      dataFormat: "json",
      type: "mscolumn2d",
      dataSource: {
         chart: {
            //paletteColors: "#ff0000, #00ff00, #00ffff", // this works
            paletteColors: "#ff0000,rgba(0,255,0,0.6),rgba(0,0,255,0.4)", // this does not work
            usePlotGradientColor: 0,
         },
         categories: [{ category: [{ label: "" }] }],
         dataset: [
            { data: [{ value: 8 }] },
            { data: [{ value: 12 }] },
            { data: [{ value: 23 }] },
         ]
      }
   }).render();
});