If you look on the 2008 Acadia page on the Online Ordering guide you can see a small image of what the new colors
look like. Its just a front view, but it gives you a rough idea of what it will look like.
then select "New for 2008" which will open a new window.
select one of the new colors listed in the new features (its in blue text) and it will display a pic
of the Acadia in that color in the right side of that window.