Ah, olly your rugby player is enjoying his pension with the Canadians.

But how about the word itself?

Main Entry: bokeh
Part of Speech: n
Definition: a Japanese term for the subjective aesthetic quality of out-of-focus areas of a photographic image
Example: The bokeh, or quality of the blurred image in the photograph, was described and discussed.

How come you good English speakers haven't found a decent English word for this part of speech? It is what in other visual arts is called 'rest form'? The counterparts in a composition? The left open spaces of a sculpture?