If you find some mintish green leftovers or other bugs, please let me know. :-)
Note: The icons seen on the screenshots are "Yltra-Flat-Arch-Blue" by Erik Dubois. I'm using a slightly modified version of it, so some icons might be different.
You can download his icon-theme here: https://github.com/erikdubois/yltra-flat-icon-theme
Changelog: 11/7/2018 - GTK3.22 support added by smurphos - https://github.com/smurphos