I want to make a car's mirror and side skirts black and uncolourable and the rest of the car colourable but i dont know how and also the skirts are detachable or seperate parts, the side skirt is joint with the car body and the mirrors are detachable but i want them black and uncolourable. how can i do that??? I've seen other car mods do that so i know its possible. --- Post updated --- oh and the skirts arent detachable, only the mirror is
You will need to give the parts new material and remap UV's to a new texture in Blender. Then you will have to re-export your model to .dae again and replace the previous one in your mod. Then you will have to add a new material in your mod's materials json file. ALWAYS MAKE BACKUPS FROM YOUR WORK BEFORE MAKING CHANGES so you won't lose your previous work
That's the former materials file format, it changed several versions ago, but you can still use it if you want. The reason why it still works is because of backwards compatibility built in to protect older mods from going outdated too soon.