The color treatment for the Toyota Prius Guest Assistance Vehicle is DFW Gradient Blue, which extends along the lower half of the vehicle on the left and right sides. The front of the Prius is solid Light Blue and the rear is solid Dark Blue. For specifications of the gradient see the Color Palette page in the Identity section of these guidelines. Color matching of the gradient shall be based on Coated versions of Pantone chips.

On the right and left sides of the Prius is a specially formatted version of the linear Airstream illustration applied in white vinyl decal. Relative orientation of the Airstream, extending from the front of the Prius towards the rear, is as shown in these scale drawings. It is applied uninterrupted over the driver and passenger doors from the front wheel wells to the rear wheel wells. The front and rear bumpers should not contain the airstream but should be solid Light Blue and Dark Blue, respectively.

Positioned beneath the rear driver-side and passenger-side windows, adjacent to the Airstream, is the DFW acronym applied in white vinyl decal. Never apply the DFW Logo, DFW Logo & Logotype or any other graphic elements on the exterior of the car, including windows.

The top portion of the Prius is white, with a designated area for "Guest Assistance Vehicle" identification, applied in Black vinyl decal. Typography is Avenir 55 Roman in capital letters. This identification is on the right and left sides of the car positioned from the middle of the back door to the middle of the rear fender.

Contact information is positioned on the rear window in white text in Avenir 55 Roman. The "Guest Assistance" identification is located at the rear of the car above the plates in black, Avenir 55 Roman. The front windshield also contains the "Guest Assistance" identification in Avenir 55 Roman, white text.