Customize existing WooThemes CSS for WordPress

We have the WooThemes «Premiere» video theme on our site Hvakanjegbli.no. All the variations available for this theme is very dark and/or colorful. We would like to have a lighter, and minimal theme, with white as the main background color. All changes can be done in css, no coding needed. We need all the colors of the theme to work with our current logo. You need to have your own server and website, as we want to see all changes before uploading any css to our server. Need freelancer who can start to work on this ASAP.