pieChart_IssuesByStatus.setBackgroundPaint(CHART_PANEL_BACKGROUND_PAINT);
pieChart_IssuesByStatus.getLegend().setBorder(CHART_LEGEND_BORDER);
this.pieChartPanel_IssuesByStatus = new ChartPanel(pieChart_IssuesByStatus, true);
// build a Line Chart and a panel to display it
final JFreeChart lineChart_OpenIssuesOverTime = ChartFactory.createLineChart("Open Issues Over Time", "Time", "Open Issues", new OpenIssuesByMonthCategoryDataset(issuesList), PlotOrientation.VERTICAL, true, true, false);
lineChart_OpenIssuesOverTime.setBackgroundPaint(CHART_PANEL_BACKGROUND_PAINT);
lineChart_OpenIssuesOverTime.getLegend().setBorder(CHART_LEGEND_BORDER);
final CategoryPlot categoryPlot = lineChart_OpenIssuesOverTime.getCategoryPlot();
categoryPlot.setBackgroundPaint(CHART_PLOT_BACKGROUND_PAINT);
categoryPlot.setDomainAxis(new CustomCategoryAxis());