Oolong's designers stand by their mandate: "Play a little every day." Some errant doodling on the computer led them to 'Oolong'-a hybrid of radiating lines, loopy shapes and textures that conspires to form an alluring visual rhythm of tone on tone. Tri-Kes/Wallcovering Source,11123 Shady Trail, Dallas TX 75229; 800-200-8120; tri-kes.com.