public override void FeatureActivated(SPFeatureReceiverProperties properties) {
        AddThemeToSpThemes(THEME_ID, THEME_NAME, THEME_DESC, THEME_IMAGE, THEME_IMAGE);
        SPWeb site = properties.Feature.Parent as SPWeb;
        if (site != null) {
            site.AllowUnsafeUpdates = true;
            site.SiteLogoUrl = site.Url + "images/thLogo.gif";
            site.Update();
        }
    }