Lost Planet Vs. Gamestop - Help Please!

So I bought a used copy of Lost Planet Colonies Edition from Gamestop today.
It was the only one used amongst the used copies of the standard version of the game.
Anyway, when I get home, I look at the disc, and it doesnt say colonies edition on it anywhere.
The published date on the disc says 2006, but the date on the casing says 2008.
I cant check it on my 360 beacuse it's giving me the Red Ring of Death right now.

My question is: Can anyone tell me if I have the wrong disc?
Does the Colonies Edition say so on the disc, or did Capcom stamp the same imagery on all Lost Plane versions?

Colonies and the original are different SKUs at the store and are different prices. Unless yours was marked as a regular Lost Planet and someone was just lazy and used that box because it had artwork, then you should have gotten the Colonies edition disc (which is selling for $26.99 if I remember correctly). Honestly it was probably a mistake. Just take it back with the receipt and you should get it sorted out.

P.S.
I work at GameStop :P