One trend shaping up for spring is an abundance of graphic black and white textiles that recall Op Art paintings, or messed up checkerboards. Mr. Panichgul’s were subtle, made of patchwork ticking stripes, but Ms. Cornejo’s looked almost as if she had recolored traditional kente cloth for her inviting wraps and a one-shouldered sheath. Ms. Sarafpour’s version was an eye-popping kaleidoscope fabric that, like the splotches of turquoise or coral beads elsewhere, relieved the drabness of her earth-tone lady coats.