In Gravity Sketch, you can import in Gradient textures to create a stylized textures on all volume and brush objects. All UVs are generated procedurally by Gravity Sketch, so all you have to do is paint.

Try out Color Space:
https://www.oculus.com/experiences/qu...

Palette Download (Steam / Rift / Quest):
https://drive.google.com/open?id=11X_...