I was wondering..example
If I activate a vampire blood and a marine blood, does it interchange in the next round?
example, I have those 2 activated right? In the first round it appears as a vampire blood, but in the next round does it appear as a marine blood?
I'm just curious, does it?

if you've got two bloods, why can't you try it out yourself?

I'm on my phone...

oh, ok. I just tested it and the the bloods don't alternate. The blood that you activate first will stay. ex. you activate the marine blood, and then the vampire blood a few seconds later, only the marine the will work and the vampire won't ever show up. (I tested in singleplayer, it might be different for multiplayer)

You shouldn't even be able to activate an item that already exists in the activated folder. But, if you can, I suppose it would be the first one you activated until you remove it. No, they will not inter-change. You can only have one blood color, hair color, force, relax, etc...

No, If you were to activate vampire blood, and then marine blood, it would show as marine blood because you activated that id after the vampire blood id.