Create new graphic theme through CSS for financial platform

We offer a financial trading platform that has a customized skin and customized layout for each of our licensees. Right now we have a new licensee where we need to create a new skin and layout using only our CSS framework in order to align the trading platform with the corporate identity and graphic identity for our customer. This is not a huge design project since there are faily few items to customize and the client profile is rather strict and straight forward. The estimated time for the job is 2 - 3 days.