My own opinion... black rims don't look good. Makes it look like you're missing hubcaps or your rims are REALLY dirty. But that's just me, cause I know a lot of people on here like them.
About the clear lens, theres a lot of forums floating around about them. They don't really make them specifically for the P5, but you can find another car that you can make it fit. Try searching, you'll find all you need. AND WELCOME TO THE BOARD!