 He (in this story) carried wares on his head instead of a real street vendor that carries wares on their backs (or in a selling container such as a wagon or wheelbarrow) in reality.The set of caps consist of his own checked (or checkerboard) cap, followed with a bunch of caps from each specific color.The peddler's checked cap is followed with a bunch of green (or gray) caps, a bunch of yellow (or brown) caps, a bunch of blue caps, and finally a bunch of red caps on the very top.