Background fade

[djoniba]

I have a working Nivo Slider, but the background is not faded. Where can I change this? Is it in JS or CSS?

[dboutote]

This is the css style rule (if you're using the default theme) : .nivo-lightbox-theme-default.nivo-lightbox-overlay

For example, I set the background color like so:

.nivo-lightbox-theme-default.nivo-lightbox-overlay {
    background: #283b91;
    background: rgba(36, 63, 141, 0.8);
}