When setting up displacements with nature/blendrockdirt_tunnel03b, every part is colored some color in-editor (http://i.imgur.com/DRoCbkU.png). Why is this, and what do the colors signify?

I brleive its just a glitch in hammer's shading. I may be incorrect. Switching to just textured instead of shaded textured in the view type seems to make the headache rocks go away.

Arachnaphob wrote:
I brleive its just a glitch in hammer's shading. I may be incorrect. Switching to just textured instead of shaded textured in the view type seems to make the headache rocks go away.

Ahh, thanks. Was wondering why they were there for a while.