Code Sketch

cleari()
setSpeed(fast)
 setPenColor(black)
def backgroundColor= cm.radialMultipleGradient(
    0, 0, 
    400,
    Seq(0, 0.8),
    Seq(cm.cyan, cm.navy), 
    false)
    setBackground(backgroundColor)
 
def  shape(steps:Long,size:Double,side:Long)
{
    if(steps==0)
    {
        
    }
    else
    {
        forward(size)
        right(360/side)
        shape(steps-1,size,side)
    }
}

var clr = ColorMaker.hsla(0,1.00,0.5,0.36)
repeat(18) {
    setFillColor(clr)
    clr=clr.spin(50)
    shape(360,1.5,360)
    right(50)
    clr=clr.spin(100)
    shape(360,1.5,360)
    right(100)
}