Eye with colors reflecting
Sharp and detail macro of multicolored eye.

Yes, you can trademark a color, but it is challenging and you must prove it has acquired secondary meaning. It cannot be “functional” with respect to the product (e.g., bright orange traffic cones). Some examples include brown for UPS trucks, pink fiberglass for Owens Corning insulation and orange scissor handles.

A UPS delivery truck in Fort Collins. United Parcel Service was founded in Seattle in 1907 and delivers over 15 million packages a day.