“Myles of Styles” (8:30 p.m., HGTV): She was a winner on HGTV’s “Design

“Myles of Styles” (8:30 p.m., HGTV): She was a winner on HGTV’s “Design Star,” and now Kim Myles is sharing her fresh sense of design on the home front for her own new HGTV series, “Myles of Styles.” Describing her design vision as “global urban elegance,” Myles will arrive on a homeowner’s doorstep each episode ready to rejuvenate a ho-hum room with her signature makeover. Get ready for tips like “paint is the best option for a fast, inexpensive makeover” (even if just one wall in the room is treated to a rich color), and “resist the urge to buy all matching furniture and accessories” (harmonious, but not matching, pieces will lend a more stylish look).

“Lost” (9 p.m., ABC): “Lost” fans should savor tonight’s episode because it’s the last new one until April 24. It has Sayid confronting Ben’s spy on the freighter. Meanwhile, back on the island, Ben urges his daughter, Alex, to flee Locke’s camp in order to survive an impending attack. An added bonus: Cynthia Watros returns as Libby.