Since this was shown in the catalogue, and it was a common style among many manufacturers including Ford, it strikes me that there must have been more than one Bianchi like this. This picture was identified as a Ford -- probably a custom for the top-hat class. (I'm not sure if I believe that). But I've found similar styles among other brands. The model kit was issued in 1970, and like most antique automobiles, there's no telling how many different paint schemes it may have experienced between 1906 and then. Therefore, I suggest that Signore Pristovnik should choose what suits his taste.
Italeri also made a 1/16 version of this kit, which to me is the best of all 300 SL kits. It's basically a scaled-up version of the 1/24, but with more detail parts plus chrome badging instead of decals. The one bothersome thing in both kits is an inaccurate windshield shape, but that can be conquered without a lot of trouble.
I would recommend the combo DVD/CD set of "Black and White Night," a Roy Orbison club concert of his greatest hits, with backup by Bruce Springsteen, Elvis Costello, Tom Waits, JD Souther, kd lang, Jennifer Warnes and Bonnie Raitt, among others, who don't try to upstage him. Beautifully engineered and shot in black and white.
My understanding of rockabilly goes back to Bill Haley, early Elvis, Buddy Holly and Jerry Lee Lewis, combining western, country, R&B and rock n' roll. This well-researched article pretty much describes it as I've always seen it: https://en.wikipedia.org/wiki/Rockabilly