The gestures in the eurythmist's movement repertoire relate to the sounds and rhythms of speech, to the tones and rhythms of music and to "soul experiences", such as joy and sorrow. Once these fundamental repertoire elements are learned, they can be composed into free artistic expressions. The eurythmist also cultivates a feeling for the qualities of straight lines and curves, the directions of movement in space (forward, backward, up, down, left, right), contraction and expansion, and color. The element of color is also emphasized both through the costuming, usually given characteristic colors for a piece or part and formed of long, loose fabrics that accentuate the movements rather than the bodily form, and through the lighting, which saturates the space and changes with the moods of the piece.