This Mod swaps the Material Files of the CAU Police Cars

there are 5 materials used, a two tone body paint (black / white) and three decal colors (white / black) inverted + red stripes on the side

all playable CAU Cars will use the same pattern, so remove other patterns in pitcrew

example variants given

Black - both carpaints are now black and the decals have a matte look
Black_n_Red - same but the stripes remain red
Black_n_White - same but the decals are white
Black_Undercover - disabled the xbt entry on the decals, gives the undercover look, besides the huge lamp on the roof
White - both carpaints are now white (silver) - decals are plain white
White_n_Black - red stripes, black decals
White_n_Red - red stripes, white decals
White_Undercover - disabled the xbt entry on the decals, gives the undercover look, besides the huge lamp on the roof
Italy - Blue base color with white parts and decals inverted white and blue
Dubai - White base color with green parts and decals inverted green and blue

you can extract one of these and edit the 5 materials to your likings - you could do some blue and yellow state trooper stuff etc.
with the decals being meshes, things get quite limited so far - lets see when we can change this aswell