Use this if you want to create your own paintjob for the T700.
With this file you can see the file struckture and def files you need to properly implement your skins.

If you new to modding take a minute and familiarise you with the tools SCS gave us.
https://modding.scssoft.com/wiki/Documentation/Tools

use also tools like:
Notepad++ for the def files https://notepad-plus-plus.org/downloads/
Paint.net, Gimp, Photoshop or another Fotosoftware for your textures (it has to handle .dds and tga files)
Tobj Editor for creating or altering .tobj https://forum.scssoft.com/viewtopic.php?t=302152

Thank you for driving my Trucks.
for Questions just ask them on the Steam Comment section for the T700 or Patreon if you like i will try to help.

Modding is a drug. Use with caution.