Draw the Line by Kathryn Otoshi; illustrated by Kathryn Otoshi. 2017. Published by Roaring Brook Press.
Brief summary: Two boys are drawing a long line on the ground unaware of each other until they bump backs. They connect their lines and happily play with the rope they have made. One of the boys accidentally pulls the rope too hard causing the other one to fall. They end up in a tug of war with the center of their rope turning into a growing crevice separating them. They fall back to the ground with the line now on the ground with a larger canyon separating the boys as they argue with one another. One of the boys goes to where the line has the smallest gap and plays in the dirt. Delighted with getting dirty, he raises his muddy hand to the other boy who decides to join him. Soon all of the canyon is filled again as they play in the mud. They happily run off together into the sun to play.
Comments: This story without words can be easily understood by all. The four colors are black, grays, yellow(happy) and purple(angry). The illustrations often are twofold.