Php/mysql shopping cart file rebranding customisation task

This task will have to be a full shopping cart file and its tempalte rebranding css and code copyright of a shopping cart software and its theme template by just branding both of them: template theme and shopping cart software with my own brand as well as my own copyright rebranding that we will use as theme tempalte by default and replace it from the original one that I will provide to you. This task includes the change class names of the backend and frontend css and theme code, xml files, etc.... with our own copyright will have to be done; """You will have to rebrand the frontend and backend of the shopping cart theme css and copyrights and shopping cart cms software with our own brand and logo and change the css former developer brand. """" This task is meant to rebrand the copyright of shopping cart cms into mine and instal this branded version on my redmine github redmine svn [login to view URL] in order to develop in the future new features to it? I think the best way to do this project is Agile way. We can do my project in few iterations (Scrum). In every iteration I decide what is important and you will implement it.;