So you know that people were being converted to those different color crystals. Doctor nods. Good to know it had become common knowledge.

Santiago and Blanche seem to be collecting soul crystals the fill in the entire rainbow of colors. The files kept in Blanche's office had commentary that stressed the need to obtain certain colors and who the top candidates were to convert for said color. If we removed the crystals of even a single hue from their collections, it might yield results.

And really, would it hurt to try? Stealing was something those who couldn't fight just might stand a chance of doing.

How did the rescuers obtain some of the crystals? Did they discover what their purpose are?