Section 5102 Of Article 8.5. Environmental License Plates From California Vehicle Code >> Division 3. >> Chapter 1. >> Article 8.5.

. The environmental license plates shall be the same color and design as regular passenger vehicle, commercial vehicle, motorcycle, or trailer license plates, and shall consist of any combination of numbers or letters, not exceeding seven positions and not less than two positions, if there are no conflicts with existing passenger, commercial, trailer, motorcycle, or special license plates series or with Section 4851.