The carbon fiber tails should look OK, and should fit as the tail light size didn't change in the 06 remodel. But the most glaring deficiency of your car is WHEELS if your goal is to blacken things out.
Maybe something like this:
Wheel Details - Discount Tire Direct
Personally, I think the stock headlights look great. Especially if you throw in some Silverstar bulbs, it looks great. Just did mine last week. It's pimping. I think those smoked front lenses look ghetto on any car. It's something you do to an old car to freshen the look up, not something you do to a brand new car.
I also think those sun visors look gay. Likesomething a grandpa would put on his ride. I like the retro look of the PT Cruiser, but somethings are better left retro ....... permanently.