1. A method for interfacing a three-dimensional ultrasound imaging system with a user, comprising the steps of: generating a multi-color three-dimensional volumetrically-rendered ultrasound image of an ultrasound object, said multi-color three-dimensional volumetrically-rendered ultrasound image manipulable using a plurality of multi-color three-dimensional image compositing functions; presenting to the user a plurality of multi-color three-dimensional image controls for controlling said multi-color three-dimensional volumetrically-rendered ultrasound image, said three-dimensional image controls having an operational similarity to two-dimensional image controls for controlling a two-dimensional ultrasound image; and relating said plurality of multi-color three-dimensional ultrasound image controls to control said plurality of multi-color three-dimensional image compositing functions for manipulating said multi-color three-dimensional volumetrically-rendered ultrasound image of said ultrasound object.