const col = [200, 20, 200]

const sz = 40

const points = [ ]

//const pointsCol = [20, 200, 130]

//let pointsCol = [20, 200, 130]

​

​

function setup() {

  createCanvas(w, h);

}

​

function draw() {

  background(20);

  noStroke()

  fill(col)

  circle(mouseX, mouseY,sz)

  points.forEach(pt => {

    fill(pt.col)

    circle(pt.x, pt.y, sz/2)

  })

}

​

function mouseDragged(){

  points.push({x:mouseX, y:mouseY, col:[random(255), random(255), random(255), 100]})

}