/* only overrides in lighter styles...*/

.ps-container .ps-scrollbar-x-rail:hover,
.ps-container .ps-scrollbar-x-rail.hover {
    background-color: #ccc;
    opacity: 0.9;
    filter: alpha(opacity = 90);
}

.ps-container .ps-scrollbar-x-rail.in-scrolling {
    background-color: #eee;
    opacity: 0.9;
    filter: alpha(opacity = 90);
}