If you’ve been following my blog, you know that I am inspired by anything associated with the National Gallery of Art. If I could decamp there overnight or longer, I would in a heartbeat. I received what I’d like to think was a nice birthday present a few weeks ago, when I woke up to read this article about Mark Leithauser, Chief of Design at the NGA, my former boss and exceptionally talented painter and exhibition designer. Fortunately, we’ve stayed in touch over the years. I can really relate to how Mark describes his work at the NGA: “I think what you want to do as an exhibit designer is…