dotfiles/.themes/Prismatic-Night/xfce-notify-4.0/gtk.css

#XfceNotifyWindow {
    background-color: #1A2327;
    border-radius: 1px;
    border: 0px solid #4b8bad;
    padding: 10px;
}

#XfceNotifyWindow:hover {
    background-color: shade(#202326, 1.0);
    border: 0px solid #9ba8bb;
}

#XfceNotifyWindow label,
#XfceNotifyWindow image {
    color: #9ba8bb;
}

#XfceNotifyWindow label#summary {
    font-weight: Bold;
}

#XfceNotifyWindow button {
    font-weight: Bold;
    border: 1px solid shade(#292d31, .80);
    box-shadow: none;
    background-image: none;
    background-color: shade(#292d31, 1.2);
    color: #9ba8bb;
}

#XfceNotifyWindow button:hover {
    box-shadow: none;
    background-image: none;
    background-color: shade(#292d31, 1.0);
    color: #9ba8bb;
}

#XfceNotifyWindow progressbar {
    border: 0px solid shade(#9ba8bb, 1.0);
    border-radius: 0px;
}

#XfceNotifyWindow progressbar progress {
    background-image: none;
    background-color: #4b8bad;
    border: 0px solid shade(#4b8bad, 1.0);
    border-radius: 0px;
}

#XfceNotifyWindow progressbar trough {
    background-image: linear-gradient(to bottom,
                                      shade(#292d31, 1.0),
                                      shade(#292d31, 1.0)
                                      );
    border: 0px solid shade(#ffff00, 1.0);
    border-radius: 0px;
}