Tim Hallman, the Asian Art Museum's Communications Director, dropped us a line about the beautiful piece:
I think the Asian Art Museum got “tagged” by this famous Parisian street artist. No confirmation from the artist yet, though. It appeared overnight on the McAllister Street side of the building, near Hyde. We didn't hire her, but we like it.
The artist in question is Mademoiselle Maurice, who has been lighting up the streets of Paris, Hong Kong, and Vietnam with her rainbow-patterned origami art for the past few months.
Here are a few close-ups:
And here's a short vid of her putting up a piece in Paris three months ago:
Update: TheUpSide is taking credit for the work.