Theme for wordpress 3.0

I need a stylish theme with a built-in style switcher (i.e. I want users to be able to choose from 1 of 3 looks for the site) - technically I guess you'd call that a colour/background switcher? The project is the merger of three different sites into one so I'd like to retain the look/feel of the existing sites as well as create a new one. So the winning bidder will be required to: 1. Convert two existing designs into a wordpress 3.0 theme 2. Design a new third style, based on tight brief 3. Ensure all three designs work within the same theme 4. Design/code-in a style-switcher and a number of widget zones for future use by the webmaster 5. Ensure Wordpress 3.0 compatibility Project is urgent - so please give me your best timescale! Note to bidders: Please do NOT skype me with your questions - just send a PM.