Manhattan architect Robert Stern has designed many beautifully detailed houses and apartments. I know of one he has done in San Francisco's Pacific Heights recalling the Bay Area Shingle Style.
Architects usually don't dress flamboyantly but rather conservatively for business reasons.
The love of design and image, however, can't be fully supressed. In this advertisement featuring Robert Stern, I'm sure he thought alot about what he would wear. Well dressed reflecting his professional achievements - with just a flash of color.
Flash of color - similar to the lunch bag in the post below?
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