An interior lighting system for a motor vehicle includes a lighting device configured to light a motor vehicle interior and a control unit configured to regulate the brightness and/or the color of the light emitted from the lighting device. The color of the light emitted from the lighting device may be automatically adjusted in accordance with at least one operating parameter and/or at least one parameter associated with the environment of the motor vehicle. Such parameters include, for example, a deviation of an actual temperature from a predetermined desired temperature of the motor vehicle interior and/or the driving speed of the vehicle.