Now say that all-white Nikes become more fashionable. Does this shift our supply or demand curve? Inward or outward? If our supply curve moves outward, then add 100 to q0S to get q1S. If our supply curve moves inward, then subtract 100 from q0S to get q1S. Similarly, if our demand curve moves outward, then add 100 to q0D to get q1D. If our supply curve moves inward, then subtract 100 from q0D to get q1D.