Hi Richard, Thanks for your reply. That does the trick! The only problem now is the Positive Paint is blocking the Range Gridline Paint even though I set the gridline to black. How do I bring the gridlines to the front? Thanks! Hans plot3.setBackgroundPaint(new Color(0, 150, 0)); plot3.setRenderer(new XYDifferenceRenderer(new Color(255, 164, 0), Color.WHITE, false)); plot3.setRangeGridlinePaint(Color.BLACK); plot3.setRangeGridlinesVisible(true);