All the aspects of the client area can be changed by editing the HTML code in the template files. The template files are located in the html_1 directory. To edit these files you will need to know HTML code or use an HTML editor. The colors for the site are contained within the css/global.css stylesheet with some colors in specific graphic files.
Additional pages can be added via the Admin Panel under the Site Setting section. Once you add an additional page you will need to create the template file in each template language folder. For example, if you create an additional page called useragreement the template file you will need to create is useragreement.tpl in the html_x directory (where x is any number).