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The student first dyed the whole thing yellow, then the lower portion purple (twice), to represent the struggle of ethical awareness and action - the yellow is saintly, the purple (my camera didn't capture the depth of it) human weakness and evil. It was part of the plan that eye level should be grey. Serendipitous was that the limit of the purple took on the shape of misty mountains - there's even a haze of green. Profound was the way it represented both the difficulty of ethics (it appears mostly purple, the yellow unattainable) and the underlying goodness of human nature (it's all yellow)... To know that you need to know how it was made. That's fitting, too, for process-intentional seminar pedagogy.