colors = d3.scale.category20();
node.append("rect")
    .attr("height", function(d) { return d.dy; })
    .attr("width", sankey.nodeWidth())
    .style("fill", function(d,i) {
        color_scale = ['#00B0B5', '#EF3F70', '#913D8B', '#FDAF17', '#005796'];
        if(i>7){
            console.log(i-8);
            return color_scale[i-8];
        }
        else{
            return colors(i);
        }
    })