Back: Woodgrain (assuming they offer a decent mahogany, rosewood, burlwood, etc...or even a nice clean maple.)
Front: Woodgrain (Non-matching front and back look like a child went overboard on eBay for his Nokia)
Accents/buttons/trim/etc: Chrome. Easy to see/use, and a classic look.
Greeting: DROIIID (old-school)
Wallpaper: Total blackness. Nothing makes a homescreen more usable than a black wallpaper, and it really makes icons/widgets pop too!
Boot Message: Awwwyeeeeaaahh!