Nice truck man! I love the 2 tone color scheme!
I'd say paint the wheels gun metal...black rims are too common....or leave them silver...I would actually love to have your wheels!
Here's a picture thread for the wheels:
http://www.toyota-4runner.org/3rd-gen-t4rs/87633-official-wheel-paint-thread.html
Also, could I convince you NOT to buy the coil spacers? I did the same thing for my front setup when I first lifted it...and hated it. The ride was horrible, and just killed my springs even faster. You could get a set of used TRD 4X4 Tundra front strut assemblies and pair them with some Land Cruiser coils for your rear, and that would cost you about the same as a spacer lift! The difference being, the Tundra/Landcruiser stuff rides a whole lot better. (If you haven't already, check out this thread:
http://www.toyota-4runner.org/3rd-gen-t4rs/66976-3rd-gen-4runner-lift-information-faqs.html )
As far as other suggestions, ISR and Deckplate mods are fun, they give you a little growl when you step on the gas! Some emblems or decals can be found for cheap on Ebay.....the sky is the limit man!
Enjoy the truck and have fun!