It seems like the the cyan background color is missing on the game

I been notice this problem since few version, and I found out the Cyan color is no longer work on the game anymore,

some zombies, such as shocker brute, a unable identify between skeleton or itself, due to cyan color are missing,

and other things like the “open space” found a second floor, are completely black now, instead of cyan, and the map editor too, evne the aiming color are missing too, when my crosshair line cross the yellow road,

Someone did report this problem before, but it seems dosn’t really getting response or anything, I hope this time will.

the changed shocker brute look is quite annoying

Exactly, I believe this problem is already exist many, many version ago, probably since the 7500, I guess?