A dark style for both the old and new Tutanota designs as of 8th August 2018. I didn’t spend much time on this style, so I’ll just make it public domain so any of you can modify it.
This style uses some some universal selectors and “!important” because I’m lazy.
License: Public Domain
9th August 2018: Updated some border and fill stuff, fix some errors.
10th August 2018: Added a missing dropdown menu and progress bar.
A preview of options you can set in your extension