We plan to upholster the chairs with a different fabric but we're not sure what patter would look best against the rug. The sectional will be a dark gray. Any suggestions, ideas, or sources of inspiration?

sample color of couch: http://ranzom.com/wp-content/uploads/2014/03/living-room-beautiful-gray-couch-with-fabric-materials-and-button-back-seat-inspiring-modern-furnishing-for-white-living-room-designs-enthralling-gray-couch-for-modern-living-room-designs.jpg

Thanks in advance!