Simple choise: red/silver, yellow, black or silver. But I quiete liked the black/orange of the old R1100S. But then again the new one should be different (otherwise my non motorminded relatives wouldn't even notice it's a new one).
So, I fiddled around a bit with photoshop with this result; a black/silver

I would have the weels painted black with a silver lining, the toptank panel and front panel in the same aluminium silver as the factory painted silver hocker (but with transparant lac).
Your votes please.
HJ