I would return them. I'm not sure as it's difficult to find answers about compounds but I believe most ceramic pads are probably a harder compound which would wear your brake tracks faster. I have a pair of Mavic ceramic rims and purchased both KoolStop and Swiss Stop ceramic pad compounds years ago and found the Salmon and whatever the best SS aluminum rim compound at the time, both gave better stopping power than the ceramic pads and wasn't much difference in longevity either. So most likely you'll get less stopping power and more rim wear from most ceramic pads. I recommend getting some KoolStop Salmon colored pads online or at a shop as they are the best I have used for wet and dry riding with aluminum brake tracks.