I'd go with the solid black.... Staggered 19s of course. For my personal taste, 20s just look a tad too big on the G8s. I have a set of TSW staggered 19s coming in this next week...
Sold: 2004 Torrid Red/Red GTO 401/373
Sold: 2005 Devil Yellow Monaro CV8 conversion 480/430
Current: 2009 Liquid Red G8 GT Premium/Sport
Staggered TSW Doningtons, V6 tails, GXP diffuser, Stock badges removed, Holden V flags,
X-pipe, resonator delete, custom straight pipes, Superchips, Vararam,