I've been patting myself on the back for weeks now, ever since my late March posting of a series of snowy misty late winter photos (the sort nobody else takes) of Old Westbury Gardens, the former Phipps estate on Long Island. What a moody place it was that day, and what a glorious place it was last week, on one of those erratic hot days that have peppered this cold spring. The Phipps place, called Westbury House when built in the first decade of the 20th century, is an unabashedly gorgeous…