[
    {
        "property": "uc.customized_popup.background",
        "label": "Background style:",
        "type": "dropdown",
        "defaultValue": "gradient",
        "options": [
            {
                "label": "Gradient",
                "value": "gradient"
            },
            {
                "label": "Solid",
                "value": "solid"
            }
        ]
    }
]