Gravana Tuning has Axis 7-Mod and Shadow available in black.

Found these while on ebay.

Enkei LS-5 20x8.5
eBay Motors: 20x8.5 Enkei LS-5 Wheels/Rim/s 5-110 5x110 Black 20-8.5 (item 360037322548 end time Jul-25-08 14:24:45 PDT)

Enkei LF-10 20x8.5
eBay Motors: 20x8.5 Enkei LF-10 Wheels/Rim 5-110 5x110 Black 20-8.5 (item 170205454894 end time Jul-25-08 14:24:20 PDT)

ADR Propulsion 18x8.5 [up to 20"]
eBay Motors: 18 ADR WHEELS RIMS TIRES 5x110 G6 HHR CATERA COBALT SS (item 130239919684 end time Jul-23-08 12:01:52 PDT)

Venti V56 18x8
eBay Motors: 1 New 18x8 5x110 5x115 Venti V56 Wheel/Rim (item 180266394175 end time Aug-16-08 11:03:52 PDT)

__________________
2007 Aggressive GXP "Natsumi"
GMPP Intake