Thanks for the pics but "prototype" usually refers to some mechanical changes and from what I understand, the '09 is identical to the '08. Has anything been changed besides colors? I agree with #91, that these bright colors detract from the aggressive look of the Viper.
My understanding is that they are essentially the same as the '08s but with some emission changes and maybe a few other small mechanical changes. But they were driving the prototypes to check out the changes that were made and to see how well those changes work. At this point, I, personally, would say it would be hard to improve on an already wonderful car!
There will be a new wheel option for '09 which I love and I think a lot of other people will like as well. I saw a picture and it looks great with the car. I believe it showed up in a picture on another thread on here not too long ago.
As for the colors detracting from the aggressive look, to each their own. I like the bright colors because it makes the car stand out so much and, to me, doesn't detract from the aggressive look at all. Plus, the 600 horses under the hood will take care of anyone's negative comments on the colors.
The great thing about the choices is just that; you have a choice. If you don't like the bright colors, go with red or black. There's something for everyone that way.