let y= 200

​

function setup() {

  createCanvas(400, 400);

 x=random(width)

  y=random(height)

  let r = random(255)

  let g = random(255)

  let b = random(255)

  for (let i=0; i<200; i++){

    if (random(0,100) < 20){

  r = random(255)

  g = random(255)

  b = random(255)

    }

     stroke(r, g, b)

    let xchange=random(-40,40)

    let ychange=random(-40,40)

    line(x,y, x+xchange, y+ychange);

   x=x+xchange

    y=y+ychange

  }

}

​

​