 The special optical effect is achieved by a multiple repetition of thin parallel lines of the two basic ornaments and an intentionally limited colour palette, relying on a simple rhythm of two to three colours.Special prominence is given to minuscule deviations and “flaws” in the applied order.These serve as another, improvised, level of rhythmicizing the paintings although they can also be perceived as a generalization of the natural and human responses to environmental changes (cycles Dogon 2007, Pacific 2008, Flow 2009).