void setup() {
	size(200, 200);
	background(255);
	smooth();
	noStroke();
}

void draw(){
	if (frameCount % 10 == 0) 
	{
		fill(frameCount * 3 % 255, frameCount * 5 % 255,
		frameCount * 7 % 255);
		pushMatrix();
		translate(100, 100);
		rotate(radians(frameCount * 2  % 360));
		rect(0, 0, 80, 20);
		popMatrix();
	}
}