IV10 - Lighting in IDW's

I'm using Inventor 10. I'm trying to create some quick drawing views for an informal presentation. My question is, Is it possible to change the lighting in a drawing (IDW).

If you look at the attached image you can see my problem. The view on the left looks fine. The view on the right, which is the one I need, has some faces that are very dark.

Any suggestions would be greatly appreciated.

Thanks in advance,
Richard ib Houston.