private void setupMaterials(Application app) {
        AssetManager manager = app.getAssetManager();
        DEBUG_BLUE = new Material(manager, "Common/MatDefs/Misc/Unshaded.j3md");
        DEBUG_BLUE.getAdditionalRenderState().setWireframe(true);
        DEBUG_BLUE.setColor("Color", ColorRGBA.Blue);
        DEBUG_GREEN = new Material(manager, "Common/MatDefs/Misc/Unshaded.j3md");
        DEBUG_GREEN.getAdditionalRenderState().setWireframe(true);
        DEBUG_GREEN.setColor("Color", ColorRGBA.Green);
        DEBUG_RED = new Material(manager, "Common/MatDefs/Misc/Unshaded.j3md");
        DEBUG_RED.getAdditionalRenderState().setWireframe(true);
        DEBUG_RED.setColor("Color", ColorRGBA.Red);
        DEBUG_YELLOW = new Material(manager, "Common/MatDefs/Misc/Unshaded.j3md");
        DEBUG_YELLOW.getAdditionalRenderState().setWireframe(true);
        DEBUG_YELLOW.setColor("Color", ColorRGBA.Yellow);
        DEBUG_MAGENTA = new Material(manager, "Common/MatDefs/Misc/Unshaded.j3md");
        DEBUG_MAGENTA.getAdditionalRenderState().setWireframe(true);
        DEBUG_MAGENTA.setColor("Color", ColorRGBA.Magenta);
        DEBUG_PINK = new Material(manager, "Common/MatDefs/Misc/Unshaded.j3md");
        DEBUG_PINK.getAdditionalRenderState().setWireframe(true);
        DEBUG_PINK.setColor("Color", ColorRGBA.Pink);
    }
Initialize the materials.

@param app the application which owns this state (not null)
jme3-jbullet/src/main/java/com/jme3/bullet/debug/BulletDebugAppState.java