Hi, I'm hoping someone can give me some advice with this livery I'm currently creating, for some reason the main body of the car (insides of doors, hood, trunk and engine bay) is bright green, I've copied the skin.materials file from another mod that works fine, I feel like I must be missing a step somewhere.
On most vehicles, there is a small section on the UV that maps to the base color of the vehicle. Yours is turning green because some green lines from the original UV are present on the skin texture in the section of the UV that maps to the base. The best way to fix this is to simply add a solid colour layer between the UV layer and the rest of your skin textures, or remove the UV layer entirely before saving the skin.
I've removed the remaining green from the skin texture but it has not changed, I did try adding a layer for the green parts to be black but it made the whole car black with no livery.
You have a single green pixel in the bottom left corner of the skin, that is most likely causing the issue.