Color (Kaleido) eInk screens can't show pure white, because the color filter is in the way. That makes the display significantly darker, and negates the entire

Color (Kaleido) eInk screens can't show pure white, because the color filter is in the way. That makes the display significantly darker, and negates the entire purpose of eInk. I sold my color eInk device after trying it for two days, and went back to B&W.