diff --git a/sdk/jme3-terrain-editor/src/com/jme3/gde/terraineditor/TerrainEditorTopComponent.form b/sdk/jme3-terrain-editor/src/com/jme3/gde/terraineditor/TerrainEditorTopComponent.form
index d94119e3d..4f8bd6483 100644
--- a/sdk/jme3-terrain-editor/src/com/jme3/gde/terraineditor/TerrainEditorTopComponent.form
+++ b/sdk/jme3-terrain-editor/src/com/jme3/gde/terraineditor/TerrainEditorTopComponent.form
@@ -332,11 +332,16 @@
           </Events>
         </Component>
         <Container class="javax.swing.JPanel" name="jPanel3">
+          <Properties>
+            <Property name="background" type="java.awt.Color" editor="org.netbeans.beaninfo.editors.ColorEditor">
+              <Color blue="cc" green="cc" red="cc" type="rgb"/>
+            </Property>
+          </Properties>
 
           <Layout>
             <DimensionLayout dim="0">
               <Group type="103" groupAlignment="0" attributes="0">
-                  <EmptySpace min="0" pref="1" max="32767" attributes="0"/>
+                  <EmptySpace min="0" pref="0" max="32767" attributes="0"/>
               </Group>
             </DimensionLayout>
             <DimensionLayout dim="1">
diff --git a/sdk/jme3-terrain-editor/src/com/jme3/gde/terraineditor/TerrainEditorTopComponent.java b/sdk/jme3-terrain-editor/src/com/jme3/gde/terraineditor/TerrainEditorTopComponent.java
index f0bd7f944..67b3d1451 100644
--- a/sdk/jme3-terrain-editor/src/com/jme3/gde/terraineditor/TerrainEditorTopComponent.java
+++ b/sdk/jme3-terrain-editor/src/com/jme3/gde/terraineditor/TerrainEditorTopComponent.java
@@ -436,11 +436,13 @@ public final class TerrainEditorTopComponent extends TopComponent implements Sce
         });
         jToolBar1.add(heightSlider);
 
+        jPanel3.setBackground(new java.awt.Color(204, 204, 204));
+
         javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
         jPanel3.setLayout(jPanel3Layout);
         jPanel3Layout.setHorizontalGroup(
             jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
-            .addGap(0, 1, Short.MAX_VALUE)
+            .addGap(0, 0, Short.MAX_VALUE)
         );
         jPanel3Layout.setVerticalGroup(
             jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)