Design for Joomla Groupon clone site

So, I have a Groupon clone site. I use joomla 1.7 and [login to view URL] "En Masse" component for groupon functions. I need fresh and trendy design and logo but in the same time simple and nice. Plus I need some extra minor modifications for my groupon clone component. 1. To have possibility to set just coupon price. Like this: Real price $200, get coupon for $10 and pay to our partner $100. 2. Now my component generat coupon with this kind of serial: 11-1-11, 11-2-11, etc... I want random numbers and letters. Like this: Y22-D-41, H71-J-94, etc... See attached image...