I've never messed with any files pertaining to vehicles, nor have I downloaded any custom ones. I loaded into GTA and saw that all the unmarked vehicles spawned in white... how would I change it back to black? The carvariations.meta file has the default values (I checked)... I don't know what to do.

The default Unmarked Stanier is white, so you could just download an unmarked vehicle mod that you can change to black or that is black already. Or, if you really want to keep the default car, you can Change it to black inside the vehicle's texture file in openiv.

32 minutes ago, GeneralFord1 said:

The default Unmarked Stanier is white, so you could just download an unmarked vehicle mod that you can change to black or that is black already. Or, if you really want to keep the default car, you can Change it to black inside the vehicle's texture file in openiv.

The FIB Van (the one that comes at you when you have four stars) is white, along with the Stainer. I've been looking through files in OpenIV but have been unable to find anything pertaining to the vehicle's texture. Along with that, I loaded into the game again and the Mayback has some visual glitch with its driver side window (it's white from a distance).

That's very interesting. You haven't messed with the vehicles.rpf at all?

 

No

Hm. I honestly don't know what would be causing that. You could try turning your mods folder off and see if it still happens, if it doesn't still happen then there's some mod causing it.