ZDoom

Forgive my stupid question, but I'd like to know if there's a way to change a monster's blood color in real time by either using ACS or a DECORATE function.

I have this boss monster that I've coded, divided in 3 phases: each phase makes him change color of the sprites via translations, but I'd like to be able to change his blood color as well, along with the sprites.

There isn't, unfortunately.

Oh bummer. Thanks anyway

The best you can do is just do a replacement spawn with a modified inherited actor when the criteria is met.

Instead of changing translations, can't you just make 3 different classes with those translations and have him morph between the classes, with each class having its own blood color, while saving his health in some variable in real-time?