This series of books is an innovative approach to the coloring activity intended for preschool kids as well as children of early school age. It serves to test the child's creativity, visual and color comprehension, and ability to render color. The illustrations are impressionistic in nature, using lines of appropriate thickness to define the areas to be colored. The spaces are closed, setting the boundaries for each color; likewise, the spaces are neither too big nor too small, adapting to the child's loco motor. Each book contains 80 pages of illustrations, giving guarantee to a fun, creative and challenging coloring activity.