How do I remove the snow and rust vehicles using ZModeler3?

[M A R I N A]

I CANNOT figure this out, I understand how the UV mapping works and I can unwrap mapped textures but I can't seem to remove parts from the textures, I can only move the parts around the texture. Clicking delete does nothing... Thanks.

[M A R I N A]

@Vlad That's the part I'm having issues with. How do you remove the decal? Do I just switch the materials or do I have to change the whole thing all together? In material properties I can see what I want to delete and there's no option.

[M A R I N A]

I figured it out, I was using the wrong generic paint material. Solved.