how to change highlight color on website

1::-moz-selection { 
2background-color: #BA9EB0; 
3color: #ffffff;
4}
5::selection {
6background-color: #BA9EB0;
7color: #ffffff;
8}
9

1/* Change Selection Text Color When Highlighting */ 
2
3::-moz-selection { background-color: #476f30; 
4color: #fff; } 
5::selection { background-color: #476f30; 
6color: #fff; }