The corolla color is evaluated on a recently opened flower and mainly during the morning hours if we do not have the chart. With the help of a color chart (Fig. 6), elaborated for this purpose, the main or predominant color (color in greater proportion) is determined, these main colors are distributed horizontally in the table and the codes are the numbers that precede, one of these values becomes the first digit to describe the color of the corolla; the intensity of the main color is read in the same color table and is located vertically, the codes are at the top, one of these corresponds to the second digit; if there is a secondary color indicate to which code it belongs and this corresponds to the third digit and immediately evaluate how this secondary color is distributed both in the beam and in the middle of the corolla, for this see Fig. 7. Four digits are read. The color chart allows to make comparative evaluations with the colors of the flowers in a wide range of illumination, ranging from penumbra to direct sunlight, since the effects of light will be similar both in the colors of the flower and in the colors of the chart, when reading them together. (Avoid exposing the color chart for a long time to sunlight). If there is no secondary color because the third digit will be equal to 0 (zero) and therefore it cannot have distribution, then the fourth digit will also be 0