The stuff doesn't really do anything to the sticker regular water doesn't, so the colour won't be coming off or anything like that. But it will be very fragile while wet. One option would be to temporarily cover it with some kind of wax, blu-tack or similar stuff so it will stay safe.
I assume it is a paper sticker and not the aluminum badge type thing as found on older models? The aluminum ones come off nicely with a bit of heat from a hair dryer or such, but paper stickers are in my experience nearly impossible to take off without wrinkling at least one corner a little bit. Even more so when embedded in a "well" on the case...
