I'm confused by this.
How it reads is you what to make skins but expect the region to be automatic? How can that work?
Excuse me if I'm reading this wrong.
There's no way S397 can make the editor a automatic thing, you have to edit it yourself so it suits your livery. If you find this all to much or to hard the simple thing to do is make a generic region that uses only 1 region color for the complete livery. Set that color as Car Paint and use that same region.DDS and json on all your liveries. No further need to edit or make a region that suits the livery.
Personally I make one for when I'm building a livery so I'm not getting a shadow coming through from the livery prier.
Set the json so it only uses that region color.
It's only as hard as you want to make it.
There are 6 regions available. I use the alpha for the carbon areas on every car whether it the GT Challenger Pack or the GT3 Pack. A basic thing that reduces the work load.
