Being nitpicky here, but the reMarkable is not monochrome, it's grayscale (with 16 gray levels iirc). It also has colour inks that will show in the companion ap

Being nitpicky here, but the reMarkable is not monochrome, it's grayscale (with 16 gray levels iirc). It also has colour inks that will show in the companion app as blue or red for pens, yellow or green for highlighter. And the proprietary file format is keystroke-based, not bitmap.