Hmmm... I dunno.. white would definately look better than the plasticy black, but they wouldn't be as noticable as if they were painted silver. Hmmm. How do you like the look of the silver on white around your windshield? I think silver and white probably looks hot.

My vote:

I think silver would look best. It's not like your car doesn't have silver trim all over it, so it wouldn't be out of place. White would definately look hot too though, but wouldn't stand out as much, in fact it might be less noticable than the black. So thats why I'm going silver.

You can always paint one of them silver, one of them white, then install and take a look at the car from either side. Then you'd just have to repaint one of them, either way you choose.