Fixed cube example.

examples/canvas_geometry_cube.html

@@ -62,9 +62,11 @@
 
 				var geometry = new THREE.CubeGeometry( 200, 200, 200 );
 
-				for ( var i = 0; i < geometry.faces.length; i ++ ) {
+				for ( var i = 0; i < geometry.faces.length; i += 2 ) {
 
-					geometry.faces[ i ].color.setHex( Math.random() * 0xffffff );
+					var hex = Math.random() * 0xffffff;
+					geometry.faces[ i ].color.setHex( hex );
+					geometry.faces[ i + 1 ].color.setHex( hex );
 
 				}