Add style to 2nd cursor


TL;DR: How do i change say, color for an added cursor, but not the initial one?

I add a cursor with this


I thought i would just be able to add a overlay decoration to it

{type:'overlay', class:'newCursor'})

and then in my stylesheet i add

  .newCursor(@visibility: visible) {
    position: absolute;
    border: 10px solid;
    background-color: #FF0000;
    color: 	#FF0000;
    visibility: @visibility;
    opacity: 0.8;
    border-color: #FF0000;

but nothing happens. I know nothing about CSS, so i may do something completely wrong here.