Every object created in GeoGebra has a color property that can be easily changed by the user. This is useful for identifying different objects of the same class. However, if we create lists of objects of the same class (e. g. a list of circles) and try to change the color of this list, then we notice that all the objects change color. How can we create a set of objects of the same class, such that each element has a different color? In this article, I will show an efficient method to color different objects of the same class.