//BeanShell Script
int xLeft = 100;
int xRight = 500;
int deltaX = 300;
int deltaY = 100;
int ySpread = 300;
int thickness = 20;

Color[] colors = {Color.red,Color.orange,Color.yellow,
Color.green,Color.blue,Color.magenta};

turtle.setSpeed(995);
turtle.setTrailThickness(thickness);

int calcY(int xVal,int stripeNum){
	return ((int) (Math.pow((xVal - deltaX),2d)/ySpread)) + deltaY + (((stripeNum - 1)*1) * thickness);
}

for(int i =0; i < colors.length;i++){
	turtle.setColor(colors[i]);
	turtle.hop(xLeft,calcY(xLeft,i+1));
	for(int x = xLeft; x < xRight;x++){
		turtle.move(x,calcY(x,i+1));
	}
}