I mean, sure, it would be a cool bit of tech but where does it fit? I go through phases with my kindle, but somehow even after obtaining one, I've ended up with even more hardcover books in my house than I had before and it's getting ridiculous (Seriously, there are stacks of books everywhere I can see at the moment, I have maybe 800+ hardbacks around the house...).
I don't really use my Oasis.. A colour one wouldn't add to my reading experience really (I like old, heavy, 'foosty' books..) and no matter how I try, even reading entertainment fiction on a e-reader just isn't the same.. I am a fan of these devices though, don't get me wrong...
I’d love my Remarkable or Oasis to be in color. I’ve used my Remarkable almost daily since I’ve received it and Oasis several times a week for years. Color on either or both would be great.
Even in color, eink devices have largely never been portrayed as an ipad replacement given their largely different use cases. It’s sounding to me like you don’t like your devices in favor of either an ipad or paper book, and while that’s okay, it doesn’t mean there’s no market for a color device.
I adore my Boox Note 2 -- I've been remarkably surprised by its firmware support too, they've added features and increased performance massively over time.
They're expensive though. More so than an iPad, and it technically does less despite being Android underneath, just due to the limitations of the tech itself.
At least for me, the main reason for the remarkable to exist is reading scientific papers -- not having to print them out (and keep track of them) is a great benefit, but sometimes color is an important part of them. As a device for _writing_, I don't miss color at all, but for reading / annotating, it would make a big difference.
Reading PDFs on an e-reader is an awful experience though. Without reflowable text, either the device is physically larger than a page and cumbersome, or it's too small and zoomed out to read comfortably.
Comics, graphic novels, manhwa. Colour illustrations in books. The presence of colour can enhance the reading experience. While still retaining the qualities that make eink/epaper better for reading.
I'm sure there are more uses for it, but our inability to come up with those uses does not invalidate its potential
Plots in research papers (although I guess they should be understandable in grayscale if for no other reason than accessibility, unfortunately that is sometimes skipped...).
I'm the opposite, I have a kindle Oasis and caught myself getting the ebook of paperbacks or hardbacks that I own. I just find it more comfortable to read.
That said, I really dislike the interface of the kindle, I like the kobo's interface slightly better (I love the pocket integration).
I could see myself use a colour e-reader for comics, for colour illustrations in books.