There seems to be a true lack of color options for the SS. The only I've seen officially so far is the car in silver. I do like the blue of the race promo car, and hope it becomes available.
Looking at this picture, I'd like Chevrolet to offer a white racing stripes paint option similar to what's on the race/promo model.
It would not only spice up the car more, but have a nice heritage connection to the 1970 Chevelle SS.
Something like this
*MoranoSS could do a much better job at illustrating this than me (in blue & white).