I know many of you are trying to figure out what shinny surface to put above your sunshade to keep the interior cool. Yes it will keep the interior of the car cooler, But.....
http://www.smartcarofamerica.com/for...crazing-21636/
Reflecting the heat comming back at the roof will just make the roof heat up more. Causing it to expand more, At night when it cools down it will contract. Doing this everyday will take its toll on the roof and may be why the roof shade is not shinny on the top. It's most likely by design.
Your best bet is looking for something like the Cal Pop tops when parked and where a Hat in the high sun with the sunshade when driving.
Their is a reson the Passions come with the solid roof option now, and its not just to add headroom.