Nah, there isn't. 😥
The "official" livery of the 037 is the Wurth one shown in screenshots, which I think is the same car they sampled the audio from. Kinda odd that they decided to "hide" the Rothmans livery despite not having the branding, even the mere color scheme is considered politically incorrect now? 🤔
In moments like this I wish Codies made the DLC cars moddable. The Porsche needs the word Rothmans in it, and the 037 needs Martini colors. Still, this is the best pair of cars released yet IMHO.