Except you can do multiple colors, by introducing differently charged pigments inside the capsules: - https://www.eink.com/assets/img/technology/GIF_Cup_E.gif

Except you can do multiple colors, by introducing differently charged pigments inside the capsules: - https://www.eink.com/assets/img/technology/GIF_Cup_E.gif https://www.eink.com/assets/img/technology/GIF_Cup_E.gif - https://www.eink.com/assets/img/technology/GIF_ACeP_E.gif https://www.eink.com/assets/img/technology/GIF_ACeP_E.gif Refresh rate was always an issue, but it is gradually improving. For static reading it's not a problem.