just make your dumb sibling pay for a new pair of shoes! unless, of course, he is only 4 years old, in which case, tell your parents, and they’ll get you a new pair.
or, as a penny-pinching alternative, white it all out with hairspray, and then make your little brother recolor itwith a blue Sharpie… actually, thats a bad idea, then he’ll color the rest of the house blue…