Old chams

I used to hack a couple of years ago and the chams that those hack had were different than the ones that I see now. The old ones would make the enemies one color when they were behind a wall and another color when they were in front of a wall. You could even customize the colors by typing the code for the color you want into some sort of text file. What happened to those hacks? Is there any way someone could bring them back?

im pretty sure ur think of d3d chams which they dont use as much any more becuase its detectabl faster
and th ewall thing is part of visible check
thier still a few ppl that do d3d chams