Good point Matt It may be best to have a wrapped pro designed in that the silvers flow with and highlight particular lines that say hey I'm an opel gtThe thing about a sports job is that the 5% of people local to that team may care slightly more about it, 95% of people will like it less.
I think a complicated wrap like that would obscure the lines and features of the GT. I would at most go with a single or two colors, racing stripe or something in the silver. Then it still looks good on its own regardless, and anyone that appreciates the team colors will notice too. If you want it to be a bit more sports themed, then get magnet decals you could slap on before events.