I stumbled across this fantastic garden, all done in shades of blue- I love it!
I think it is a lovely example of a classical garden design that still feels very livable and current. You can find more photos of this garden by Reed Hilderbrand Landscape Architects here on Houzz.com. Definitely spend some time admiring all the different flowering plants in shades of blue (and some blue-purple and white). I also admire their use of the blue ceramic Chinese stools as accent pieces.