CYPRESS, Calif.--(BUSINESS WIRE)--Market leader SitOnIt® Seating today introduces two multipurpose chair collections – Lumin™ and Rio™. Lumin is elegant and contemporary, with a perforated back for exceptional support and comfort. Rio is a fun, flexback stacker with innovative technology. Both come in 17 plastic colors and 2 frame colors for a lot of personality. “Plastic chairs can be both beautiful and smart,” said Lisa Martin, Senior Director of Product Marketing for SitOnIt Seating. “With i