Problem with tvtk.tools.visual.box

I was trying the example of animation in http://docs.enthought.com/mayavi/mayavi/auto/example_mlab_visual.html#example-mlab-visual
I found it gives an error of tvtk.tools.visual class don't have attribute "colour".
Also, tvtk.tools.visual.box() have a problem when I tried to update the position of the box with like "box.x=1". The display doesn't change with the line. I tried visual.Cylinder(), it works well.