JFreeChart chart = charts.get(i);
ChartPanel chartPanel = chartPanels.get(i);
XYPlot plot = chart.getXYPlot();
plot.setDataset(0, new XYSeriesCollection(vSeries));
final XYItemRenderer renderer1 = new StandardXYItemRenderer();
renderer1.setSeriesPaint(0, Color.blue);
plot.setRenderer(0, renderer1);
plot.setDataset(1, new XYSeriesCollection(cSeries));
final XYItemRenderer renderer2 = new StandardXYItemRenderer();
renderer2.setSeriesPaint(0, Color.red);
plot.setRenderer(1, renderer2);
ChartUtilities.applyCurrentTheme(chart);
tabs.addTab("Ideal" + (i + 1), chartPanel);