My Boxster has a grey dash and interior. In certain lighting conditions the reflection from the grey dash onto the windshield makes it difficult to see out.
I found a black gauge cover on EBay for cheap and swapped it with the original grey one. It makes a very noticeable improvement on the drivers side! There is a lot less reflection now. I wish there was an easy fix for the passenger side, changing out the entire dash is more than I want to get involved with!