fullscreen
int space = 33;
size(400,400);
smooth();
noStroke();
background(255);
for(float xPos = 50; xPos <= width-50; xPos = xPos + space){
for(float yPos = 50; yPos <= height-50; yPos = yPos + space){
fill(random(50,250), 100, 100, 100);
ellipse(xPos, yPos, 10, 10);
}
}