I discovered the specular attribute isn't apply in the collada importer.
Could you add this code in the method "processPhong(phongType pt, ColladaMaterial mat)" in the class "ColladaImporter".
// set the specular color value of the material
if (pt.hasspecular()) {
ms.setSpecular(getColor(pt.getspecular().getcolor()));
}
// set the shininess value of the material
if (pt.hasshininess()) {
ms.setShininess(pt.getshininess().getfloat2().getValue().floatValue());
}
thanks
have fun :D