The silver masks are pretty cool, but they look kind of bland in my opinion. The gold blends, however, look absolutely awesome. To my knowledge, I don't think that LEGO has done anything like that with past BIONICLE parts (if I'm wrong, please let me know). I've seen some people on here say that they're not liking the gold blend, as it limits MOCing possibilities. I've never been too big into MOCing myself, so this does not appear as a con for me.