QPerVertexColorMateral Qusetion

ofmrew

I use a ply file with color for each vertex, namely:
ply
format ascii 1.0
element vertex 5
property float32 x
property float32 y
property float32 z
property uchar red
property uchar green
property uchar blue
element face 6
property list uint8 int32 vertex_index
end_header
0 0 0 225 0 0
10 5 0 0 225 0
10 -5 0 0 0 225
7 2 4 225 225 0
7 -2 4 0 225 225
3 0 4 3
3 0 3 1
3 4 1 3
3 2 1 4
3 0 2 4
3 0 2 1

However, Qt 3D shows it as I black object, while MeshLab show the color. The code snippet shows the material and lighting:
Qt3DExtras::QPerVertexColorMaterial *material = new Qt3DExtras::QPerVertexColorMaterial;

Qt3DRender::QMesh *flyingwedgeMesh = new Qt3DRender::QMesh;
flyingwedgeMesh->setMeshName("FlyingWedge");
flyingwedgeMesh->setSource(data);
Qt3DCore::QTransform *flyingwedgeTransform = new Qt3DCore::QTransform;
flyingwedgeTransform->setScale3D(QVector3D(1.0, 1.0, 1.0));
Qt3DRender::QFrontFace *frontFace = new Qt3DRender::QFrontFace(rootEntity);
frontFace->setDirection(Qt3DRender::QFrontFace::CounterClockWise);
flyingwedge->addComponent(flyingwedgeMesh);
flyingwedge->addComponent(material);
flyingwedge->addComponent(flyingwedgeTransform);

Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity(rootEntity);
Qt3DRender::QPointLight *light = new Qt3DRender::QPointLight(lightEntity);
light->setColor("white");
light->setIntensity(0.5);
lightEntity->addComponent(light);
Qt3DCore::QTransform *lightTransform = new Qt3DCore::QTransform(lightEntity);
lightTransform->setTranslation(QVector3D(60, 0, 40.0f));
lightEntity->addComponent(lightTransform);

What am I missing?