diff --git a/src/org/hwo/ui/JDiagram.java b/src/org/hwo/ui/JDiagram.java
index bfbfb5a..2d68776 100644
--- a/src/org/hwo/ui/JDiagram.java
+++ b/src/org/hwo/ui/JDiagram.java
@@ -486,8 +486,14 @@ public class JDiagram extends JComponent implements PlotProviderListener, Bounde
 				Point2D pmin = mapDiagramToMouse(new Point2D.Double(0, bg.getMin()));
 				Point2D pmax = mapDiagramToMouse(new Point2D.Double(0, bg.getMax()));
 				
+				int x,y,width,height;
+				width = this.plotWidth;
+				height = (int)(pmin.getY() - pmax.getY());
+				x = getWidth() - this.plotWidth - this.bRight;
+				y = (int)(pmax.getY());
+				
 				g.setColor(bg.getColor());
-				g.fillRect(0, (int)pmax.getY(), getWidth(), (int)(pmax.getY() - pmin.getX()));			
+				g.fillRect(0,y,getWidth(),height);			
 			}
 
 			paintOrdinates	((Graphics2D) g);
@@ -852,7 +858,7 @@ public class JDiagram extends JComponent implements PlotProviderListener, Bounde
 			this.num = num;
 						
 			this.colDraw	= Color.BLACK;
-			this.colGrid	= Color.LIGHT_GRAY;
+			this.colGrid	= Color.GRAY;
 			
 			this.scaler		= new LinearScaler();
 		}
@@ -942,4 +948,8 @@ public class JDiagram extends JComponent implements PlotProviderListener, Bounde
 	public List<ColoredBackground> getColoredBackgrounds() {
 		return coloredBackgrounds;
 	}
+	public void setColoredBackgrounds(List<ColoredBackground> backgrounds){
+		this.coloredBackgrounds.clear();
+		this.coloredBackgrounds.addAll(backgrounds);
+	}
 }