3D object render Color

[reflexion]

Hi,

 

I have an object which I do not know exactly what it is (free form element, mass element, aec, etc).

 

The colors are all well set-ups in the viewport of Architecture 2008, but when I hit the render key, it seems that some polygons looses their color.

 

I tryed converting it to a 3d solid, but I wasnt able to. I tryed to change the colors in the style manager, but it did not worked.

 

here is my problem: