My friends at EOL.net have been busy creating theme-based F3 skins.
If you are interested in picking up a skin you might need the Spanish-English translation file.
All skins are in spanish but they can easily be translated with XUITT and the above file.
If you want to use these skins in another language than english, import the above file and use the cross-translation function in XUITT.
The english translation is almost the same as the default F3 skin strings, therefore you should be able to get a complete translation in few minutes.
Have fun and give credit where due.
Here a screenshot of how to cross-translate: