BibleFox is a FireFox® Add-on (plugin) that will theme your toolbar, amongst other aspects of an open Firefox® window with Christian-based icons. To be honest, this isn’t really my bag, but I presume the more conservative generation of Christian Firefox users may be interested in it.
You never know, designs such as this could help lead someone to Christ. You never know what the final-nudge will be when someone is contemplating a decision to except Jesus as LORD and Saviour. May God bless the designer of this add-on.
If this kind of thing is your cup-of-tea, you can Download the Plugin for free.