Thank you for the link.
Color might be nice for covers, but I am not sure I would want to pay the cost premium for the technology (I'm assuming it would cost more, anyway.) As a rule, black & white will suffice for
my personal eReader use, since I will probably only use the eReader to read novels, biographies, histories, but I can see the need for those readers of different genres - technical books, etc.
Of course, back in the day, monochrome CRT screens were the latest and greatest, and now most of us couldn't imagine using a computer without an LCD monitor with great color graphics capabilities.
At some point in the (near) future, I imagine black & white-only eReaders will also be considered "dinosaurs."
Holly