Abstract INTRODUCTION IN ALL sections of the country shell eggs are being produced under different, effective feeding and management programs. These programs contribute to the development of egg yolks that vary considerably in color intensity. It has long been known that the color intensity of egg yolks can be rapidly changed when the pullet consumes graded levels of different pigments. From the time of lay until the eggs reach the hands of the consumer, it is possible that these eggs are candled several times. If the egg candler unwillfully neglects the variations in yolk color, then certain shell eggs would be either graded erronously high or low. Parker et al. (1926) observed a correlation between yolk color and yolk shadow. Almquist (1933) indicated a relationship between yolk shadow and yolk color when there is a wide range of yolk colors, but very little relationship midway of the range. Botsford (1940) reported…