.green .x-window-tc,  
.green .x-window-bc {  
  background-image: url("/images/green/window/top-bottom.png");  
}  
  
.green .x-window-ml,  
.green .x-window-mr  {  
  background-image: url("/images/green/window/left-right.png");  
}  
  
.green .x-window-tl,  
.green .x-window-bl {  
  background-image: url("/images/green/window/left-corners.png");  
}  
  
.green .x-window-tr,  
.green .x-window-br {  
  background-image: url("/images/green/window/right-corners.png");  
}

.yellow .x-window-tc,  
.yellow .x-window-bc {  
  background-image: url("/images/yellow/window/top-bottom.png");  
}  
  
.yellow .x-window-ml,  
.yellow .x-window-mr  {  
  background-image: url("/images/yellow/window/left-right.png");  
}  
  
.yellow .x-window-tl,  
.yellow .x-window-bl {  
  background-image: url("/images/yellow/window/left-corners.png");  
}  
  
.yellow .x-window-tr,  
.yellow .x-window-br {  
  background-image: url("/images/yellow/window/right-corners.png");  
}