Originally Posted by Kommisar89

Try a hair dryer. The heat will soften the glue and let you peel them off. As to whether they will come off intact, that's hard to say. My experience has been that the decals will soften and stretch a bit on removal which will distort them somewhat. That probably shouldn't be a major issue if a graphic artist is using them as a pattern but you could not simply use a copier to capture the image.