We purchased a web site off the shelf (Couponic) and require some customization.
* change place logo
* minor changes to theme colors
* add new tab with static page content
The site uses UniProgy Framework which is not actually a stand-alone full featured framework. It's an extension of Yii Framework that adds some new features which are used across the whole Couponic script. The UniProgy Framework tends not to break or override any original Yii Framework feature or core functionality. Even if some functionality is overriden there's always a way to use default behavior.
Here is a link to the Couponic product developer page:
[url removed, login to view]