darken gkPhoto > a:hover

How can i darken the hover in gkPhoto in gridgk5 instead of lighten with opacity?

.gkPhoto:hover {
opacity: 0.10; filter: alpha(opacity=10);
}

other filter or set a dark background to .gkPhoto?

Thanks for advice

Hi,
in theory you can use other CSS3 filters , but not all of them are supported by all browsers.
adding a transparent dark layer would be also ok, but request much more coding.