Color gives soul to a form

Rudolf Steiner:  "Forms are at rest, stationary. But the moment a form is given color, the inner movement of the color lifts the form out of its resting condition, so that the liveliness of the world and of the spirit flows through the form. As soon as you color a form you endow it with cosmic soul because the color does not belong exclusively to the form; it forces the form to relate to its environment, indeed to the whole universe. Coloring a form feels like going toward it and endowing it with soul qualities. You breathe soul into the dead form when you bring it alive with color."

Source: "Ways to a New Style of Architecture," lecture 5, "The Creative World of Colour," July 26, 1914, in Architecture as a Synthesis of the Arts, p. 141