mellow-yellow started following (Archived) with registry hack, sign in without password, Why is Evernote so weak compared to OneNote?, (Archived) EN5 Slow? and and 2 others
Yes, please allow changing the background color of the client applications (Windows Evernote, mobile apps) -- if nothing else, please do this for Accessibility reasons! A current (web) workaround: force the colors your browser shows to display a black background. I keep Chrome, my primary browser, open using normal colors and Firefox open (on my second screen) with the tweaked colors.