public static void setTranslucent(Spatial spatial) {
    MaterialState rs = (MaterialState) doRemoveRenderState(spatial, StateType.Material);
    if (rs != null) {
      materials.put(spatial.getName(), rs);

      MaterialState newState = DisplaySystem.getDisplaySystem().getRenderer().createMaterialState();

      ColorRGBA ambient = rs.getAmbient();
      ambient.a = .5f;
      ColorRGBA diffuse = rs.getDiffuse();
      diffuse.a = .5f;
      ColorRGBA emissive = rs.getEmissive();
      emissive.a = .5f;
      ColorRGBA specular = rs.getSpecular();
      specular.a = .5f;

      newState.setAmbient(ambient);
      newState.setColorMaterial(rs.getColorMaterial());
      newState.setDiffuse(diffuse);
      newState.setEmissive(emissive);
      newState.setMaterialFace(rs.getMaterialFace());
      newState.setShininess(rs.getShininess());
      newState.setSpecular(specular);
    }
    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));
      }
    }
  }
 /**
  * Applies color to a Spatial in the form of a <code>MaterialState</code>.
  *
  * @param spatial
  * @param diffuseColor
  * @param ambientColor
  * @see MaterialState
  */
 public static MaterialState applyColor(
     Spatial spatial, ColorRGBA diffuseColor, ColorRGBA ambientColor) {
   colorStripper(spatial);
   MaterialState targetMaterial =
       DisplaySystem.getDisplaySystem().getRenderer().createMaterialState();
   targetMaterial.setDiffuse(diffuseColor);
   targetMaterial.setAmbient(ambientColor);
   spatial.setRenderState(targetMaterial);
   spatial.updateRenderState();
   if (workingState != null) {
     MaterialState ms = (MaterialState) workingState;
     workingState = null;
     return ms;
   } else return null;
 }