Standard is the base level of service on Trenitalia's Frecciarossa (high speed) trains. The color scheme is orange, and there are typically four Standard cars per train.
Seats in a Standard car are arranged in rows of four, with two on either side of a center aisle. It's the same arrangement in Premium cars, and seats are exactly the same size. Each seat has a power outlet. Luggage storage is available in overhead racks, under the seats, and at one end of each car.