And just like the type of bean, for a single variety of coffee beans that have not been blending
, the more uniform of the bean color the better. If the coffee beans differed in the depth of the colors, there were several possibilities, or the green bean chose by the coffee bean was old bean, causing the water content of the green bean not uniformed. Or the manufactures blended them and the coffee beans were not pure. Or there may be something wrong with roasting or lack of dewatering time. Or the roasting problems, dewatering time is not enough. Whatever the reasons are, they are detrimental to the quality of coffee beans.