The factory neon spoiler(not SRT version) should fit in place of the SRT spoiler without any other modifications. Its about 1/3-1/2 of the height on the SRT- version.
That might be a more economical option, as I am sure there will be people willing to trade the lower spoiler for the baby carriage/stroller version that comes on the SRT.
Otherwise, most paint/body shops mix their own paint, very few will buy premixed colors from the factory. However, you would have a better change of getting factory mixed paint from a Dodge dealer with a body shop.
Just my .02
Chris
GM, TriState Audio and Performance