LAS VEGAS — The blue-and-yellow color scheme of Chevrolet's Camaro GS Racecar Concept evokes memories of the late Mark Donohue's championship-winning Camaro from the 1969 Trans Am series. The concept will be on display at the 2008 SEMA Show.The GS concept was developed by North Carolina-based Riley Technologies, working with GM's Performance Vehicle Operations. Riley already is developing a similar GS-class racing car for the 2009 Grand Am Koni Challenge series.The SEMA car boasts a reinforced chassis and a race-ready suspension, with a production LS3 V8 and a Tremec six-speed manual gearbox. Riley adds a C&R racing radiator, upgraded oil, trans and differential coolers and a 3-inch exhaust system with Coast Fab mufflers. To keep track weight down, the 2010 Camaro gets a carbon fiber hood, deck lid, doors and fenders. The Donohue-inspired deep-blue paint scheme is accented with yellow graphics, yellow racing wheels and a yellow cockpit.Inside Line says: It's good to see Chevrolet returning to its roots. — Paul Lienert, Correspondent