If I remember correctly, the XRR wheels come in seal grey unless specified to match the colour of the exterior (or any other color you might want I guess).
So I take it your combination is GT Silver with Seal Grey wheels.
It does look great, though I think that Arctic Silver would male a little more contrast with the grey wheels and probably look a little better.
I'd be curious to see any pics of an Arctic 997 with Seal Grey wheels. . .