Question about background at Leafre

Seems like anyone who is start enough might be able to hunt down that in the wz files and alter it so that the game always thinks its glowing and always thinks the character is under it

It'd be like having godmode, but people see you take damage

....
Given that ridiculous hacking idea, it still wouldn't be that useful even if you did it because then you're limited to that tiny area under the rock. The best places where it is are usually at points where the spawn gets "Clogged" so you'd only go up there for a little while to clear that out and get training normally again. Not that anyone trains at those forest maps anyway...