Can't answer that question as I am only using KOR on my ereader, which only displays black an white :D What would be your usecase for color in ebooks?

I do find Breezy Weather quite nice ;)

You could give KOReader a try :)

A quick search turned up lightnovel crawler - But I have never used it myself.

Does it have to be a sbc, or can it also be a mini pc?

+1

The recipe import feature is quite nice - it worked flawlessly for most of the websites i tried

Edit: Formatting

They are already matching serial numbers in software to verify if a part is still the original one, so I guess the next logical step would be indeed to switch to authentication modules. With that they would allow users to change the parts on their own while still making lots of money

You should check out iceraven if you want even more addons. Iceraven