Vehicle colour editing?

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Is there a mod or feature somewhere to edit a car's palettes in SHAR?

I picture in my mind what "Ferrini - Red" (which is Bart's roofless Ferrini) would look in yellow as a change. It even reminds me of that great looking yellow sports car from a classic game on PlayStation 2, Xbox, GameCube and PC of the 2000's - True Crime: Streets of LA.
You can open a vehicle Pure3D file from art\cars with the Pure 3D Editor tool, and then export any textures you want to edit, edit them, and then import them back in before saving the file in CustomFiles\art\cars.