Gazebo change material color successfully but doesn't show in the screen

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I want to change the material color in Preupdate and following are my codes

void changeColor::Change(sim::EntityComponentManager &_ecm){
auto link = this->model.LinkByName(_ecm, "0000");
auto newLink = Link(link);
auto visual = newLink.VisualByName(_ecm, "visual");
auto color = _ecm.ComponentData<sim::components::Material>(visual).value();
color.SetAmbient(gz::math::Color(1, 0, 0, 1));
color.SetDiffuse(gz::math::Color(1, 0, 0, 1));
color.SetEmissive(gz::math::Color(1, 0, 0, 1));
cout << color.Ambient() << endl;
_ecm.SetComponentData<sim::components::Material>(visual, color);
_ecm.SetChanged(visual, sim::components::Material::typeId);

}

I the result looks weird, in right hand side we can see the color successfully change, but in left hand side it still black hope someone can help me, thanks