class Square{
  
  int x,y,s;
  color f;
  
  Square(int _x,int _y, int _s){
    x = _x;
    y = _y;
    s = _s;  
    f = 255;
  }
  
  void drawBox(){
    fill(f);
    rect(x,y,s/2,s/2);
  }
  
  void rollover(){
    if (mouseX < s && mouseY < s) {
      f = 125; 
  } else if (mouseX > s && mouseY < s){
      f = 0; 
  } else if (mouseX < s && mouseY > s){
      f = 175;    
  } else if (mouseX > s && mouseY > s){
      f = 255;
  }
  }
}