So I have really gotten into modding GTA IV. I have installed LCPDFR, multiple Plugins, ENB's, etc. But I am having one issue that I cannot resolve. 

I loaded in a Unmarked CVPI that supports multiple colors, but when I select the vehicle from Native trainer or from the police station (LCPDFR) I can only get it in a single/one color.. RED.

I tried changing the color in the native trainer menu it cycles through color names Maroon, blue, black etc but the car remains red. I have a similar issue with the NYPD/LCPD Unmarked Taxi the taxi says that it supports multiple livery's (It's equipped with 4) but when I go into native trainer to change the livery it say's -1 meaning there is only one livery for the vehicle. I use SparkIV.

I have Mulitple Liverys Enabled in native trainer. Set too =0.

LINK TO BOTH CARS:

NYPD Unmarked CVPI - http://www.lcpdfr.com/files/file/1671-nypd-unmarked-2010-ford-crown-victoria/

NYPD/LCPD Unmarked Taxi - http://gtapolicemods.com/downloads.php?do=file&id=2609

What slot are you replacing? 

What slot are you replacing? 

NOOSE for the Taxi and FBI for the CVPI

***SOLVED***

I had to add +Livery to my vehicles.ide.