Can Sith crystals be "bled" by Jedi?

They can be unbled, as done by Ahsoka Tano

The crystals that had powered his lightsaber were no longer contained by metal, but their song had not dimmed. She held them in one hand, almost shaking as the familiarity of them coursed through her...her mind's eye sorted the preassembled components and those she had just retrieved into order, locking each into place with the others....when she turned them on, they shone the brightest white.

Chapter 28

"I've never seen white ones before", Bail mused.

"They used to be red", Ahsoka said. "When the creature had them, they were red. But I heard them before I ever saw him on Raada, and knew they were meant for me."

"You changed their nature?", he asked.

"I restored them", Ahsoka replied. "I freed them. The red crystals were corrupted by the dark side when those who wielded them bent them to their will. They call it making the crystal bleed. That's why the blade is red."

Chapter 30

Source: Ahsoka (novel)