ohmy_dum i mean the numbers turn red when you're low health like the m0rehud theme.
Oh ok, well if you want to remove everything (like the animations when you are low/buffed/lowammo or even the full uber) you can just delete the hudanimations_custom file i guess.
While if you want to delete only the low health animation for example, go always to hudanimations_custom and delete the whole "Health Dying Pulse" section.