with the correct color

src/main/java/environment/RIOBasinNetworkObserverPresence.java

@@ -336,7 +336,8 @@ public class RIOBasinNetworkObserverPresence extends ObserverListener implements
 							g.setColor(Color.WHITE);
 						else
 							g.setColor(Color.GRAY);
-					}
+					} else
+						g.setColor(Color.BLUE);
 
 					g2d.fill(displayShape);
 				}
@@ -346,7 +347,8 @@ public class RIOBasinNetworkObserverPresence extends ObserverListener implements
 
 	public enum ColorScaleEnum {
 
-		RedsScale(new RedsScale()), BluesScale(new BluesScale()), BicolorScale(new BicolorScale()), GraysScale(new GraysScale());
+		RedsScale(new RedsScale()), BluesScale(new BluesScale()), BicolorScale(new BicolorScale()), GraysScale(
+				new GraysScale()), GreenScale(new GreenScale());
 
 		private ColorScale scale;
 
@@ -409,6 +411,41 @@ public class RIOBasinNetworkObserverPresence extends ObserverListener implements
 
 	}
 
+	public static class GreenScale implements ColorScale {
+
+		@Override
+		public Color getColor(double value) {
+			return new Color(0.4f + 0.45f * (1f - (float) value), 1f, 0.4f + 0.45f * (1f - (float) value));
+		}
+
+
+		@Override
+		public void drawLegend(Graphics2D g2d, double threshold) {
+			int nbLegend = 11;
+			for (int i = 0; i < nbLegend; i++) {
+				float col = (float) i / (float) (nbLegend - 1);
+				g2d.setColor(getColor(col));
+				g2d.fillRect(10, 30 + 10 * (nbLegend - 1 - i), 20, 10);
+				double limit = Math.round(threshold * i / (nbLegend - 1) * 10.) / 10.;
+				g2d.setColor(Color.BLACK);
+				g2d.drawString(String.valueOf(limit), 32, 20 + 10 * (nbLegend + 1 - i));
+			}
+		}
+
+
+		@Override
+		public Color getSeaBasinColor() {
+			return new Color(0, 102, 255);
+		}
+
+
+		@Override
+		public Color getRiverBasinColor() {
+			return new Color(0, 204, 255);
+		}
+
+	}
+
 	public static class RedsScale implements ColorScale {
 
 		@Override