[Question] Vilner Bullshark (FBI) interior freaking out...

[Sammy1970]

The Bullshark (https://www.gta5-mods.com/vehicles/vilner-bullshark-fbi) has been flipping out on my side, not a clue why...
It's interior and some outside spots are changing color from black to greyish-beige.
It's more like blinking, swift changes, and even upon a reinstall etc. this keeps happening.
Anyone a theory?

Thanks aforehand.