The Los Angeles Metro subway cars are being upgraded.

Metro took to social media on Friday to show off the exterior of the new train cars, one of which appears to have bright yellow accents to contrast with the classic metal outside of subway cars.

The HR4000 trains, which are manufactured by Chinese company CRRC and assembled in Springfield, Massachusetts, are set to replace some original subway vehicles that are nearing the end of their service lifespan.

A total of 64 new subway cars arrived in L.A. on Saturday to add capacity to the B and D lines as the system grows.