Yes, that might be nice to have. The One Laptop Per Child laptop (XO) had a dual-mode display with a &quot;Reflective (backlight off) monochrome mode for low-power use in sunlight&quot; [1]. Does not seem to have caught on though. Wasn&#x27;t the same, but as far as I remember, it was alright.<p>I guess the majority of users would not want a greyscale display (or at least manufacturers think so).<p>[1] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;OLPC_XO" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;OLPC_XO</a>