void setup() { 
  size(600, 600); 
  noStroke(); 
  

} 
 
void draw() { 
  float m = millis()/12; 
  background (10,2,m%255); 
   
  fill(15,5,m%100); 
  rect(50, 175, 200, 200); 
  
  fill(60,0,m%100); 
  rect(100, 200, 100, 100); 
  
 


}