So when I first started using evernote on windows, the interface was gray. And it didn't bother me that there was no dark theme for evernote because most of the interface was dark enough. The web version was much darker too. At some point a design decision to go with bright white was made, and I can't fathom why.
When I first started trying out Windows 10, one of my chief complaints was that there was no dark theme. While I do not entertain the notion that people care much about what I think, I think it's fair to point out that there was market pressure enough to have Apple and Microsoft each develop dark themes for their respective OS's. When Android was a newer thing and it was popular to root ones device, one of the chief reasons to do so was to apply a dark theme. Almost every development IDE comes with a dark theme.
It should not be surprising that given my love of customization, I used to run a linux desktop. I'd peruse the internet and see the other customizations others had made to their compiz desktops etc.... It should come as no surprise given the theme that I'm working on here, that most people used some sort of dark theme.
My point here is that I feel that this is a significant enough point to the user base of a lot of software applications, not just evernote, that I am slightly stunned that the effort has not been put in. I think that evernote is otherwise the best note taking app I've ever used, and would love to see this small trifle dealt with.
Also, since the service is subscription based, it would also be nice if there were a version available for linux too.