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let r, g, b;
function setup() {
createCanvas(400, 400);
background(255, 89, 123);
r = random(255); // range: 0~255
g = random(255);
b = random(255);
}
function draw() {
if(mouseIsPressed){
stroke(r,g,b);
strokeWeight(random(10));
line(pmouseX,pmouseY,mouseX,mouseY);
}
}