4.24 Write three functions, one to clear blue (Program 36 (page 94)) and one to clear red, and one to clear green. For each of these, which would be the most useful in actual practice? How about combinations of them? 4.24 Write three functions, one to clear blue (Program 36 (page 94)) and one to clear red, and one to clear green. For each of these, which would be the most useful in actual practice? How about combinations of them