background(0, 0, 0); strokeWeight(70); for (var i = 0; i < 400; i += 1) { var r = random(0, 255); var x = random(0, 400); stroke(25, 100, r, 100); line(i, 0, x, 400); } var mouseClicked = function() { background(0, 0, 0); strokeWeight(70); for (var i = 0; i < 400; i += 1) { var r = random(0, 255); var x = random(0, 400); stroke(25, 100, r, 100); line(i, 0, x, 400); } };