“I typically like to travel to places that have great textiles—and tons of color,” says New Yorker Katie Hatch, creative director of Sleepy Jones, the spirited line of old-school pajamas and laid-back loungewear helmed by Andy Spade. A recent trip to Oaxaca, Mexico, perfectly fit that criteria, with the city’s color-blocked Spanish colonial architecture, artisanal craft museums, and maze-like markets that overflow with geometric Zapotec rugs and embroidered huipil blouses. Wandering the cobblestone streets, Hatch marveled at the painted ombré graffiti, the stuccoed wall treatments that could rival a Rothko, and the hand-stenciled details on many a facade. Most of her time, however, was spent in the boutiques and open-air mercados, where she picked up brightly patterned paper lanterns and a giant needlepoint blanket trimmed with rainbow tassels. “The shopping…