Code Sketch

clear()
setSpeed(fast)
setBackgroundH(blue,purple)
right()
  hop(200)
  left()
  var fill=cm.hsla(0,0.62,0.66,0.46)
  repeat(20){
    setFillColor(fill)
    repeat(5){
      forward(70)
      right(72)
    }
    right(20)
    fill=fill.spin(60)}