You can easily style parts of RadCalendar
using implicit styles
To achieve the desired look you can use Summer Theme or Windows8 Theme. You need to make some modifications inside the ControlTemplate of RadCalendar
to fit the described scenario and to customize some brushes.
In the attached project I demonstrated how to style RadCalendar
using Windows8 Theme.
I removed main header and put arrows next to month header. I hope it will be helpful.
the Telerik team