Actually I have done this before with my own Gixxer, remove the decals. Of course, the best ways to remove decals is to use a hairdryer or heatgun. By heating up the decals until they are loose enough, you will easily be able to take those annoying decals off. You can also look at this instructable of how the author uses GooGone to remove any remaining residue. (I find that you can also use regular motorcycle cleaner to remove residue, most of the time they are pretty easy to remove.)
