I have one of the kobo Libra color ereaders, the saturation is definitely muted and there is a bit of a screen door effect but overall it’s pretty cool.
I did hate the screen door at first though, like a lot. Curious to see one of these in real life. The online reviews of the Libra basically overlooked the negatives and now I’m skeptical of everything haha.
I’ve been making an uneducated guess that the screen alignment may be a hard-to-solve problem. Holding my Libra and Libra color next to each other you can see a noticeable difference in the clarity of black and white text.