The (fixed) carpets are indeed dark grey. But unless it has changed recently, there are no dark grey (removable) floor mats. I have the 2007 order guide and it does not mention them.
Regarding retrofitting options, be careful. Regular options can be retrofitted at a later stage,, but Exclusive options are much trickier. In fact you need to find someone who already has the part you want, ask him for his VIN, and then ask your dealer to pretend you are the other guy.
Since you have ordered an uncommon color and live in a small market, it might turn into a problem.
Since you did order the rear console and the compartment lid option, I would definitely add option CDZ "Gear Lever Trim in Leather". It really finishes the leather console and ties it together with the PCM side panels. Everyone who's seen it wants it. It costs only $250 but you'll run into trouble if you want to add it later (Exclusive option). Ask atomic80 about it.
I originally did not mention CDZ since I thought you had kept the storage compartment lid in Alcantara, and passed on the rear console. But since you started converting the rear console to leather, you must finish the job.
Door finishers can be retrofitted at a later stage (regular option), but speaker covers can't (Exclusive option). Honestly, the speaker covers aren't such a big deal (the color and material difference is justified from a functional point of view), but I think you might want the door finishers.