Something like this.. in gunmetal or flat black. I think it'd look great on a Silver car. Go 16".
Maybe add some blacked out/jdm headlights.. not sure whats out there for Civics these days, but something along those lines with gunmetal wheels would make the car look great.
I always go for a simple/clean race look, so I'm not sure if you're going for something more showy or anything.. but there's my 2c.