public static void completeColorStripper(Spatial spatial) {
   spatial.clearRenderState(StateType.Material);
   spatial.clearRenderState(StateType.Texture);
   spatial.clearRenderState(StateType.Shade);
   spatial.clearRenderState(StateType.Light);
   spatial.updateRenderState();
   if (spatial instanceof Node && ((Node) spatial).getChildren() != null) {
     for (int i = 0; i < ((Node) spatial).getChildren().size(); i++) {
       colorStripper(((Node) spatial).getChildren().get(i));
     }
   }
 }
 private static RenderState doRemoveRenderState(Spatial s, StateType state) {
   if (s.getRenderState(state) != null) {
     RenderState rs = s.getRenderState(state);
     s.clearRenderState(state);
     return rs;
   }
   return null;
 }
 private static void doWireframeApplication(Spatial s, boolean apply, WireframeState ws) {
   if (apply) s.setRenderState(ws);
   else if (s.getRenderState(StateType.Wireframe) != null) {
     s.clearRenderState(StateType.Wireframe);
   }
 }