Do you ever get lost in the wall-to-wall patterns on a casino, hotel, or restaurant floor? Italian artist Rudolf Stingel does: in his new work, Plan B, he has installed vibrantly hued carpeting over the entire lobby and outdoor entrance plaza of the Walker and Guthrie Theater. Featuring an intense field of blue flowers on pink grass, the nearly 7,500 square-foot artwork creates an artificial garden and may be one of the world’s largest paintings. The Walker’s installation of Plan B is half of a diptych. The other part is on exhibit at Grand Central Terminal in New York City through July 29.