this has been a feature of broesel hud for ages
from the readme.html file in it:
HP Cross
- rename or delete HudPlayerHealth.res
- rename or delete HudDamageAccount.res
- rename HudPlayerHealth_CROSS.res to HudPlayerHealth.res
- rename HudDamageAccount_CROSS.res to HudDamageAccount.res
example of someone using it https://www.youtube.com/watch?v=S20xwW-kSe0