[OTHER] Low health red overlay removal?

[Romulator]

When the player is low on health, the screen generates noise and has a distinctive red tint. I am considering making a CS (may become a Full Conversion Custom Story) in which the main character can only see in Grayscale, therefore remove this tint. I can edit everything accordingly except this ;o

Is there a particular script which overrules this factor or something I can fool around with in the coding?
And I swear I am not lazy, but if someone could also modify it for me if they can figure out what to do and post the code somewhere or... something?

Whatever helps is appreciated