Your opinion.
What you'll have to do is to go into SOMA's main folder through steamapps/common if you are on Steam and go into the script/modules folder. Then open a file called 'HighlightEffectHandler'. Open it with Notepad.
There should be two lines near the top of the file:
float gfHightlightEffectMaxDistance = 3;
float gfHightlightEffectMaxDistanceSqr = 3*3;
Change them to this:
float gfHightlightEffectMaxDistance = 0;
float gfHightlightEffectMaxDistanceSqr = 0*0;
That should be it, happy immersing. I hope the highlighting didn't damage the game for you or anything.