So far the only confirmed colors are:

Bright Silver Metallic
Brilliant Black Crystal Pearl
Dark Titanium Metallic
Deep Water Blue
Hemi Orange Pearl
Inferno Red Crystal Pearl
Stone White
TorRed

B5 Blue was on the preliminary '09 Brochure listed as "Late Availability" but there's nothing official on it yet.

No other colors have been officially announced either for immediate choice or late availability. Anything beyond the list above is pure rumor at this point.