I had installed MS Office 2012 on Windows 7. Can I design my app in office 2013 style with Visual Studio 2012 and standard means(may be wpf?) like this

I had installed MS Office 2012 on Windows 7. Can I design my app in office 2013 style with Visual Studio 2012 and standard means(may be wpf?) like this

This indeed looks like a Window with the borderless window style set, a red/orange border, an image or two, some TextBlocks and some retemplated/restyled buttons - if done in WPF. You could also do something similar in Windows Forms, plain old GDI/GDI+ or Direct3D/Direct2D. Even HTML if that is your language of choice. For a Windows 7 app though WPF would be best and would be the best path to learn practices useful in Windows 8 development as well. If upgrade to Windows 8 is possible though (there are some pretty good deals for upgrade to Windows 8 from any other Windows) - I would consider going straight to Windows 8.