Hi everybody! :)

CustomUI v2
http://moi.maxsm.net/media/files/CustomUI.2.0.beta1.zip
http://moi.maxsm.net/media/files/CustomUI.2.0.beta1.CommandBar.zip

This version works with MoI v4 beta Dec-12-2017 only!!! (and with all later versions of course)
Now CustomUI should be stored in AppData directory.

Installation (Win):
Extract CustomUI.2.0.beta1.zip to C:\Users\<username>\AppData\Roaming\Moi\
Make backup copy of existing C:\Program Files\MoI 4.0 beta Dec-12-2017\ui\CommandBar.htm
Extract CustomUI.2.0.beta1.CommandBar.zip to C:\Program Files\MoI 4.0 beta Dec-12-2017\ui\

Installation (Mac):
Extract CustomUI.2.0.beta1.zip to /Users/<username>/Library/Application Support/Moi/
Make backup copy of existing /Applications/MoI v4 beta Dec-12-2017.app/Contents/Resources/ui/CommandBar.htm
Extract CustomUI.2.0.beta1.CommandBar.zip to /Applications/MoI v4 beta Dec-12-2017.app/Contents/Resources/ui/