glTF import (to Blender) issue 1
What you see here are official TB brushes.
I'm also sharing in this folder images of how glb stroke looks in blender when just imported and the screenshot of shader nodes, that Blender builds.
https://drive.google.com/file/d/1zvOd8E9dnkIeuQAWuD5oAHqE6k4tzX4x/view?usp=sharing