https://www.good-display.com/product/385.html https://www.good-display.com/product/385.html These seem to be pretty cutting edge, and as a result quite expensi

https://www.good-display.com/product/385.html https://www.good-display.com/product/385.html These seem to be pretty cutting edge, and as a result quite expensive, but they claim 4096 colours. The only one I can see with any sort of price is a 31.2", 720p version that does 4k colors and 16 levels of grey, and costs $2200. And is out of stock! https://buy-lcd.com/products/good-display-312-inch-large-e-ink-display-parallel-7-color-e-ink-panel-with-16-gray-level-gdep312tt2-c https://buy-lcd.com/products/good-display-312-inch-large-e-i... There's a video of it in action here - https://youtu.be/bPnJh4QcjDY https://youtu.be/bPnJh4QcjDY