Well, for me as a "vampire" :), black in "excess" is highly preferable. I already use screens too much for work and then "play" at home.
White is just too bright for my eyes subjectively so even a sepia/green tone like Kindle offers would be a welcome addition!
I've just now come back to Evernote from 2013...and how is there no proper dark theme?? It's obviously going to be optional.
Devs, please don't forget us, Google also tends to ignore dark theme requests too (though finally they added it to YouTube recently).