丰富matlab colorbar的颜色(enrich color of the matlab colorbar)

非常多配色的3*N的矩阵，3列对应RGB，N对应颜色过渡的层数。给你的图片高大上的配色。(A matrix of very colouring 3*N, 3 columns corresponding to RGB, and N corresponding to the number of layers of color transition. Give your picture a tall color.)