Net (but when I'm using Mono then it's easy to see the changes). I've tried to trick the application to load a decent theme. Net (doing double click on the executable) then the look & feel is horrible. The case is that when I run the application from the Xamarin Studio or using Mono, then I have a relatively nice look & feel, but when I run the application using. Net tool chain to compile, because Xamarin doesn't allow me to compile using the Mono toolchain). The installed Mono version is 3.2.3 (but I'm using the. I'm programming a GTK Sharp (v2.12) application using Xamarin Studio 5.4 on MS Windows.