Or...if he really just detests coloring (either motorically or philosophically), maybe he would prefer to make a "collage". Instead of coloring, let him look through old magazines and cut out matching pics to the illustrated pics OR any variety of "s" words if the teacher doesn't mind. My ds (also in K) keeps bringing home similar worksheets they do in class. His are little square pics he is to color, cut and paste. The pics are scribbled hastily with a single color and pasted crookedly on the page. The back of his sheets, however, are filled with the most delightful "water treatment plant blueprints" and scenes or volcanic eruptions. Go figure.