I have a duel cab Diesel Hilux (Go the lux's hey LowLux!) But just finished reading a great story on the the new D Max in 4x4 Australia. Pretty much a Colorado re badged..
I think it is the other way around, Colorado is a rebadged D Max. Which is why the front end changed and the name changed from Rodeo, because Izuzu where coming into the market. Just like all holdens (except commodore), they are rebadged vehicles.