最近新发现的一个扩展，很有意思。不用下载主题到本地就可以更改firefox的样子，而且有n多种界面方案可供选择。Mozilla Labs这样介绍它的特性：

Features

• You can select a Persona from the dynamic menus and see results instantly without having to discover, select, download or install a separate bit of software or code.
• Personas can be added, removed or updated by their designers at any time, without requiring a software update.

试试吧，一定能带给你不一样的体验。下载它，开始装扮你的firefox。