The paint color will have more of a bluish tint, despite its name, said Sgt. Steve Austin of the Ottawa County Sheriff's Department.
The car is believed to be a Pontiac Grand Am or Bonneville. Manta-green metallic is used by General Motors, which used to make Pontiacs.
Witnesses were able to get a partial license plate number of "CMZ."
Austin said police have some leads in the case, but are looking for more information. In the meantime, detectives are working with the Secretary of State to match up the vehicle and partial plate number.
Drew Johnson, 15, suffered a broken leg and scrapes when he was hit by the car around 6 p.m. Sunday. The collision took place on M-104, just west of 144th Avenue, in Spring Lake Township.
Johnson was traveling west on his mo-ped when the car abruptly turned and struck him, police said.
An ambulance took the boy to North Ottawa Community Hospital, where he had surgery on his leg the next day. No further information was available on Johnson's condition.
Anyone with information on the car police are searching for is asked to call Silent Observer at 877-88-SILENT.