const maxLength = 10;

const totalLines = 100;

​

const colors = [

  '#840115',

  '#800034',

  '#00138a',

  '#a381ff',

  '#0a1db5'

] 

​

function setup() {

  createCanvas(600, 600);

  background(0)

}

​

function draw() {

  background(0, 10)

  for (let i = 0; i < totalLines; i++) {

      const p = createVector(random(width), random(height))

      const c = color(colors[Math.floor(random(colors.length))])

      c.setAlpha(random(10, 255))

      stroke(c)

      strokeWeight(random(1, 1.5))

      line(p.x, p.y, random(p.x, maxLength), random(p.y, random(p.y, p.y +2)))

  }

}