Try "GOO GONE". I've used it to take off all kinds of stickers (like on refrigerator, etc.) and it works on lots of stuff without damaging the finish of the item you are removing the sticker from.
Decided it wasn't worth it. Whatever finish they use was over the sticker. The coloring on the sticker is on the top and started to come off when is messed with it. Not worth anymore time to save.