First off, as a Mac user, Palm OS is the way to go (outside of going with the new
iPhone).
With regards to the color of the new Treo 755, I haven't seen a grey version. Also, everything I've heard points to navy blue or maroon. FWIW, the navy will probably look very similar to the
Treo 750 which is a very sharp looking phone.
You might want to wait for the release of the Treo 755. If you decide to go with the Treo 700p, you'll most certainly find a better price at that time.
Good luck and welcome to ET!
-Chris