Minor improvement.

examples/webgl_geometry_extrude_splines.html

@@ -136,8 +136,7 @@
 
 			tubeMesh = THREE.SceneUtils.createMultiMaterialObject( geometry, [
 				new THREE.MeshLambertMaterial({
-					color: color,
-					transparent: true
+					color: color
 				}),
 				new THREE.MeshBasicMaterial({
 					color: 0x000000,