Since Libreoffice 4 there is a new feature in place which will let you use Firefox/Thunderbird persona as a skin for this great office suite. Follow the procedure below to personas working with Libreoffice.Open Libreoffice and navigate to Tools –> Options –> Personalization. Choose the option: Own theme and then click Select Theme button.

Once you have done the previous a new window will pop-up which will let you either to get the persona from Mozilla or add a link to a desired persona directly. Once you have selected the persona you want then just approve all changes and restart Libreoffice to see the results.

NOTE: Libreoffice’s toolbars remain with a black font by default so make sure you will select a persona which can handle black fonts well. For my Libreoffice I used Clean_grey persona which I created some time ago: https://addons.mozilla.org/fi/firefox/addon/clean_grey/

Side note: In a near future I will also publish a dark persona which will work well with Libreoffice. The persona will be a part of a larger JWM/SLIM display manager theme set.

Here is a screenshot from my current Libreoffice looks:

Libreoffice using Firefox persona. You can see the most obvious change when you look at the toolbar.