Make pond shader look less shiny

jme3-testdata/src/main/resources/Textures/Terrain/Pond/Pond.j3m

@@ -1,12 +1,11 @@
 Material Pong Rock : Common/MatDefs/Light/Lighting.j3md {
-     MaterialParameters {
-         Shininess: 8.0
-         DiffuseMap: Repeat Textures/Terrain/Pond/Pond.jpg
-         NormalMap: Repeat Textures/Terrain/Pond/Pond_normal.png
-        Diffuse : 0.8 0.8 0.8 1.0
+    MaterialParameters {
+        DiffuseMap: Repeat Textures/Terrain/Pond/Pond.jpg
+        NormalMap: Repeat Textures/Terrain/Pond/Pond_normal.png
         UseMaterialColors : true
-        Specular : 1.0 1.0 1.0 1.0
-     }
-    AdditionalRenderState {
+        Shininess: 32.0
+        Ambient  : 0.2 0.2 0.2 1.0
+        Diffuse  : 0.8 0.8 0.8 1.0
+        Specular : 0.3 0.3 0.3 1.0
     }
 }