Norman McLaren Elements Quotations

The number of strokes to the inch controls the pitch of the note: the more, the higher the pitch; the fewer, the lower the pitch, the size of the stroke controls the loudness... the tone quality is the most difficult element to control, it is made by the shape of the strokes.

Unless it's done superbly, as in the Japanese film Gate of Hell, color can be a very distracting element.