MaterialState materialp = display.getRenderer().createMaterialState();
materialp.setShininess( 128 );
ColorRGBA color = new ColorRGBA( 0.5f, 0.5f, 0.5f, 0.1f );
materialp.setDiffuse( color );
materialp.setAmbient( color.mult( new ColorRGBA( 0.5f, 0.5f, 0.5f, 0.1f ) ) );
planeXY=new Box("planeXY",new Vector3f(0.05f,0,0.05f),0.1f,0.0001f,0.1f);
planeXY.setRenderState(materialp);
MaterialState materialx = display.getRenderer().createMaterialState();
materialx.setShininess( 128 );