Razor Themed View Engine for multi-themes site - Context is King

Have you ever implemented a multi-themes site using Razor view engine? Yes it is really good to do that. Specially, you can do it and make it work well with Razor. I spent a lot of time to investigate this problem. After searched on Google, I had found some of links very useful about this topic. But all of them also implemented in ASP.NET MVC 2.0 and custom a WebformViewEngine. So I know I must work with it from scratch. But no problem, I decided to...