Everything, rings, weapons, potions, they all turned red. Even her own items turned red.
Might have had something to do with reinstalling the Chloe mod midgame (i made a change to tactics mod, and it reinstalled chloe)
Anything I can do?
You can try and talk to her; I believe the self repair option is 'you look all strange'. It might help, but it's probably the only thing you can do. You can try to use shadowkeeper or another editing tool and check what is wrong with her - attributes, race, class. If they are off, correcting them may be enough.
But most likely you'll be stuck with starting over again or kicking her out of the party - you can try if kicking her out and accepting her again works, but I doubt it.