The feel of the second floor, baptized the “Jewel Box Soirée Room,” is quite different.

It uses art nouveau and art déco designs, executed in gold leaf, pastels and bright red polka dots.

The “Jewel Box” refers to the bar at the far end of the room, whose heavy-handed gold leaf application is supposed to make it “shine like a jewel,” as Hughes puts it.

While Monday Club Bar will serve American dishes, the Soirée room, as the name implies, will be devoted to French cuisine.

Deibel and Hughes also replaced the restaurant’s old crocodile mascot with a zebra—“a horse with design gone wild,” according to Deibel.

The comparison makes sense, if the Market Theater—whose building was renovated to staid, somber splendor for $2 million by founder Gregory C. Carr—can be thought of as the horse.

Carr, meanwhile, is in the midst of building a new house from scratch for the Market Theater at the intersection of Mass. Ave. and Arrow Street. He originally sold the Upstairs on the Square property in order to expand the capacity of his 100-seat theater, but due to conflicts with city residents, the new theater will probably seat only about 150.

—Staff writer Eugenia B. Schraa can be reached at schraa@fas.harvard.edu.