Are you guys looking for any feedback/bug reports on the experimental branch at all?

When running, footsteps are leaving green/pink steps that can only be seen at certain angles (may be intentional)
With full reflections on, the terrain is covered in small flickering squares (probably not intentional)
Few little bugs with weapon animations etc.
purple and yellow are placeholders while they figure out more accurate footstep sound triggers, and might be used in pathmaking the terrain. graphical error has been mentioned in a couple of threads recently, and the devs are pretty good at looking through the forums. my suggestion, go have a look in the bugs subforum and post there if its not been mentioned recently:)