Jason Newburg's Modified Pitts S-2S Viper isn't exactly the same airframe as Prometheus, but the two purpose-built aircraft are certainly similar. Aside from their nearly identical performance envelopes, there are slight visual differences including wing shapes, control surface dimensions, tail feather profiles, etc. This is not the Pitts Viper, this is the Viper's CS applied to Prometheus...Because this is RealFlight and not RealLife we can do these things.
A couple of artistic liberties were taken with Viper's scheme, however the elements are basically all there. The most obvious difference will be the top of the wing design needing to be mirrored as opposed to asymetrical, but it is still in the spirit of Viper's original design.
Special thanks to Owen Hewitt (polypoke) for the suggestions implemented into the spectral layer to simulate Viper's Custom PPG Harlequin "color shifting" green finish. I should also thank him for modeling the original Prometheus EA, "Thank you".