Using the release 3.2 image, I followed the demo script which says:
	bunny drum setColor: green.  "Notice that this animates as well!"
	bunny drum resize: 1/5.
	bunny head resize: 1.5
	"Undo three times."

When I click on the undo button, I get no change.  So I am stuck with a
bunny with a big head and a small green drum.

Mike