I have one and the count is 9 colors.
ORIGINAL: Cuda340
A friend of mine saw the newly issued 2009 Challenger brochure.
It has the following 8 colors offered:
Hemi Orange...R/T Only
TorRed
Inferno Red Crystal Pearl
Brilliant Black Crystal Pearl
Bright Silver Metallic
Deep Water Blue
Stone White
Dark Titanium Metalic
B5 Blue (later in the year)