I’ve definitely come to appreciate the way in which straight black and white can achieve better results on an e-paper display than greys. Actually it does use

I’ve definitely come to appreciate the way in which straight black and white can achieve better results on an e-paper display than greys. Actually it does use real grey in one place: the highlighter. While you draw, it renders in chequered black and white like tools in grey, except that where it overlaps existing black-and-white chequering it turns it into solid black so you can see what you’re doing, and then it redraws the full highlighted area afterwards, with highlighting-on-white being true grey, and highlighting-on-faux-grey becoming, I think (don’t have a microscope or sufficiently capable macro lens handy, and ghosting makes it hard to be sure anyway) darker-faux-grey, chequered black and light grey. If you go using the highlighter extensively as part of drawing, you rapidly discover just how awful the ghosting is until you can trigger a full redraw, which admittedly happens more often once actual greys are in use. reMarkable also uses true greys in antialiasing of its own UI icons and text.