We got the multi-colored ones at Fulton's on our trip last year. The ones at Fulton's can be changed to stay at just one color or be switched to slowly change all sorts of colors by a press of a small button. The batteries can be changed in them as well. I have 3 of them from last year and only one battery had to be changed this year....but I didn't run them constantly. I just put them up as souvenirs.