what strings are these???

ok new GC story, as if you all hadn't had enough of them. I was over at GC the other day and i had to try that ibanez BTB cuz you guys are always talkin about it. Well i didn't really like it but it had the wierdest strings ive ever seen on it. I asked the bass guy what strings they were and he didn't know. Ok listen to this carefully and see if anyone can tell me what strings these are. They were like a dark silver, almost black and then every other string was dark Blue. So it was like a roundwound with every other strand either dark blue or dark silver black. They were really stiff strings too, if this makes any sense. If anyone can tell me what strings theses are i'd be jazzed, thanks.