DefaultThemeBackgroundMedia: {
    alignment: "Center";
    blur: 0;
    brightness: 0;
    contrast: 0;
    customCss: "";
    enabled: false;
    fit: "Cover";
    hue: 0;
    offset: {
        x: 0;
        y: 0;
    };
    opacity: 0.5;
    rotate: 0;
    saturation: 0;
    scale: 100;
    source: "";
    type: "Image";
} = ...