Since the beginning, vBulletin has had some way of inserting style-related variables into its templates.
Full story here:
vBulletin 4 - Style Variables - vBulletin Community Forum
![sveditor-simple.png](http://images.vbulletin.com/blog-content/kier/40-stylevars/sveditor-simple.png)
![sveditor-compound.png](http://images.vbulletin.com/blog-content/kier/40-stylevars/sveditor-compound.png)
Full story here:
vBulletin 4 - Style Variables - vBulletin Community Forum