[рони]

Vahan60,

const colors = [
        ["colo/colZ1/Path_0.png", "colo/colZ2/Path_0.png"],
	["colo/colZ1/Path_1.png", "colo/colZ2/Path_1.png"],
	["colo/colZ1/Path_2.png", "colo/colZ2/Path_2.png"],
	["colo/colZ1/Path_3.png", "colo/colZ2/Path_3.png"]
];
const img = document.querySelectorAll(".img");
const bttn = document.querySelector(".bttn");
const len = colors[0].length;
let index = 0;
const changeSrc = index => colors.forEach((arrSrc, k) => img[k].src = arrSrc[index]);

changeSrc(index);

bttn.addEventListener ("click", function () {
index = ++index % len;
changeSrc(index)
});