Looks pretty damn close. The problem I can see with them is the bumps would have squared off edges, whereas the Spartans' are rounded. Good find though!
Plus, you would need a lot of pot holders for it too.
Anyway, I know I saw something that would fit the pattern somewhere, but I cannot seem to remember where. It was on the net, I think. Not that that helps any. "Everything you want is out there on the internet, it's just wading through all of the other crap that's the problem."