How to change the color of scroll bar for Mozilla.

.scrollBarCol {
    scrollbar-face-color: rgb(35,53,110);
    scrollbar-arrow-color: rgb(155,203,235);
    scrollbar-track-color: rgb(155,203,235);
    scrollbar-highlight-color: rgb(35,53,110);

}
body ::-webkit-scrollbar { width: 10px; height: 3px;}
   /*::-webkit-scrollbar-button {  background-color: #666; }
 ::-webkit-scrollbar-track {  background-color: blue;}*/
body ::-webkit-scrollbar-track-piece { background-color: rgb(155,203,235);}

body ::-webkit-scrollbar-thumb { height: 50px; background-color: rgb(35,53,110); border-radius: 3px;}

/*::-webkit-scrollbar-corner { background-color: #999;}

::-webkit-resizer { background-color: #666;}*/

 I have used this code for changing the color of scroll bar but it doesnot work for mozilla.