Color mixing card learning set 4 types spring/summer/fall/winter designs setColor mixing card learning set 4 types spring summer fall winter designs set Easily learn how colors express emotions throughout the four seasons! Learn easily with 4 different themes! A detailed explanation of how to create a color composition and the key points of color combinations. You can learn the basics of expressing emotions with color while practicing. For both poster colors and acrylic gouache *Mixed color cards are not included in the set.