Affiliate Program Software CSS/HTML Restyling Design Required

We have purchased affiliate software (iDevAffiliate). It's been integrated into our e-commerce website design with the PHP side, however, the software itself remains very dated in terms of styling, as if it was in 2002! Our website is built to a 2012 standard and therefore there is a direct contrast with the styling. We need someone to restyle all of the front-end pages (home, signup & manage account) for the affiliate program software only, so that it blends more into our website. You will be responsible for 100% styling, mainly through editing the CSS file, not only through updating the colour scheme to our core website but also lifting the design to a 2012 standard. There are about 25 basic pages to edit. Basic HTML editing may be needed. Job is to start immediately, fixed price, via Escrow with Elance and I'm available on Skype 18 hours a day, seven day a week. FTP provided and information as to which files need to be edited, including the CSS document, of course. Note that editing the navigation bar at the top, for example, will edit all pages, therefore, making it easier. Any questions, please let us know with the bid. Please read the project first and write the word "Understood". Also write your steps and suggestions to complete the project with a short description of what you understood.