void setup() {
	size(800, 800);
	colorMode(RGB);
	background(20,1,55);
	noStroke();
	smooth();
	frameRate(16);
}

void draw() {
	int box_height =50;
	int box_width = 50;
	int base_color = 50;
	int y_color = 100;

	for(int i=0;i<30;i++){
		for(int j=0;j<30;j++){
			 int e = int(random(5));
			switch(e){
				case 2:
					float r_color = random(8,y_color);
					fill(base_color + r_color,10,40);
					ellipse(j*box_width, i*box_height, box_width, box_height);
					break;
			}
		}
	}
}