Custom web application - skin/theme required

We currently have a custom website that needs to be re-themed to look professional. This an online inventory management system. The final deliverable would be Photoshop (PSDs). Please provide any examples or past work that might resemble something similar. I need a professional looking theme that is to be used in a software as a service web application. If you require more information please message me privately. To preserve propitiatory information rights only upon winning the bid I will provide screen shots of the current application which can be used to create the theme. This is a very simple site with under ten pages.