[Ti] Aluminum books - fit and finish

[JFL]

Al-Books shells have to be anodized aluminum (powdered aluminum bonded 
to itself an another material, which can even be plastic). It's why, if 
you really take a close look or even a magnifying glass to it, the 
aluminum has a beach sand-like appearance. Now as to whether they're 
painted over to protect that surface -- not sure. Most likely something 
is done to protect the aluminum from oxidizing, which might actually 
make aluminum black if I remember correctly.

> aluminum surfaces of these powerebooks.  Are they painted? anodized?
> Jerry