IMO this extension is an upgraded extension of the FA Bbcode Extension. I say upgraded because this extension uses a .less file whereas FA Ext. takes advantage of font Awesome being apart of core.
This extension can easily be used to add bbcode for any font.
I proved it's extendability by adding my own css snippets above. Think I'll extend it more by adding specific fonts from http://fontcdn.org @clarkwinkelmann will have no choice but to call it something more awesome.
This extension could be even more impressive if it also had a js less file..hint hint. ?