Now included black reflector version for the headlights.
Installation:
Chose a version which you like then rename it to car_lights_tga.tex.dds
Example: car_lights_tga_black.tex.dds to car_lights_tga.tex.dds
car_lights_tga_normal.tex.dds to car_lights_tga.tex.dds
You'll need a Unity Assets Explorer or if you want easy method, you can use this plugin: https://www.racedepartment.com/threads/plugin-vehicle-texture-swap.146039/