Mate needs gtk-engine-murrine for its theme.

[FredBezies]

I used arch-anywhere to install Archlinux with Mate in a VirtualBox machine. I noticed gtk-engine-murrine was missing as its corrupt theme display.

Adding it and then doing a logout and a login and display was right.

[deadhead420]

Is this package required? Don't see anything at all about it on the wiki.

[FredBezies]

Well... It is needed with gtk2 version of Mate. Not gtk3 one.

https://www.archlinux.org/packages/community/any/mate-themes/

gtk-engine-murrine (optional) - for gtk2 themes
gtk-engines (optional) - for gtk2 themes

What about it, so ? :)

[deadhead420]

I have added it to install with mate. I have also added support for mate-gtk3 as well. This will be released in the next version tomorrow. Thanks for bringing it up

[FredBezies]

You're welcome. Do not forget to add gtk3-print-backends for mate-gtk3... Or users won't be able to use their printers successfully.

https://www.archlinux.org/packages/extra/x86_64/gtk3-print-backends/