White and black gradient 5 series

Quick answer：

The 'white and black gradient 5 series' refers to a design or color scheme often found in the automotive industry, where the car has a gradient of white and black colors, typically seen on the body of a vehicle in the '5 series' model. This could be a specific model of a car, such as the BMW 5 Series, or it could be a generic description of a car design feature.