From which does the color come from the objects which we perceive? It is initially of the light itself that are born the colors. Indeed, the sun produces a white light which contains all the colors of the luminous spectrum. The coloured objects contain pigments which absorb or reflect part of the received light. For example, a flower appears red to us, because its pigments reflect the red part of the light and absorb all the other colors. There
exists : 3 primary colors: yellow, red and blue. These pure colors cannot be obtained by the mixture of other colors. The red and the yellow abound in nature, contrary to the blue, which is rarer. 3 secondary or binary colors: green, purple and orange. These colors come from the mixture, in equal proportions, of the primary colors located on each side. The green is omnipresent in the world of the plants; one finds his multiple nuances through the foliage of the plants. 6 tertiary colors are obtained by the mixture of the primary and secondary color located each side. All these colours, except turquoise, are abundantly represented in the vegetable kingdom. Starting from these colours, it is possible to create various nuances or tone by the addition of white, gray or black in varied proportions. One calls
" complementary " color that which is diametrically opposite on the chromatic circle. For
example : Orange and Blue - Red and Green - Yellow and Purple - etc.