Can the returned increase their BioChroma?

[Munazir]

First time reading Warbreaker. I’m on the part when we learn the the GodKing takes 2 breaths a week into of 1. Didn’t they say that the Returned couldn’t increase their BioChroma. They took breath once a week to survive. 

[Werewolff Studios he/him]

38 minutes ago, Munazir said:

First time reading Warbreaker. I’m on the part when we learn the the GodKing takes 2 breaths a week into of 1. Didn’t they say that the Returned couldn’t increase their BioChroma. They took breath once a week to survive. 

This is a Read and Find Out moment, but you should get an answer in this book