It looks like an update was pushed to the inky library last week that tweaks how reds are displayed. I pulled out my badge to try it out. It’s not available through the installer yet, but you can remove the current version 0.0.4 and install the new code directly with git clone https://github.com/pimoroni/inky.git; cd inky; sudo ./uninstall.sh; sudo ./install.sh
The new red color is darker than the competing display! There is still ghosting with repeated changes. I don’t think it’s still getting lighter with repeated changes, but I’ve only tested a handful of changes, not every five minutes all day like @chicagoedist.
A regular three-pass cleaning cycle run with ./clean.py -t what -c red appears to remove the ghosting, not two hundred passes as @yannick had to do. (One pass alone doesn’t, but two passes with ./clean.py -t what -c red -n 2 gets pretty close!)
I’ll have to leave it alone for a bit to see if it fades much over time, but I’m looking forward to this change hitting the installer!