点击图片预览时，无法修改预览页顶部导航栏的背景色

[835932621]

   let style: UIModalPresentationStyle = .fullScreen
    var config = HXPhotoPicker.PhotoBrowser.Configuration()
    config.showDelete = true
    config.modalPresentationStyle = style
    config.tintColor = .black
    
    let cell = collectionView.cellForItem(at: indexPath) as? ResultViewCell
    HXPhotoPicker.PhotoBrowser.show(
        // 预览的资源数组
        selectedAssets ?? [],
        // 当前预览的位置
        pageIndex: indexPath.item,
        // 预览相关配置
        config: config,
        // 转场动画初始的 UIImage
        transitionalImage: cell?.photoView.image
    ) { index, _ in
        // 转场过渡时起始/结束时 对应的 UIView
        self.collectionView.cellForItem(
            at: IndexPath(
                item: index,
                section: 0
            )
        ) as? ResultViewCell
    } deleteAssetHandler: { index, photoAsset, photoBrowser in
        // 点击了删除按钮
        PhotoTools.showAlert(
            viewController: photoBrowser,
            title: "是否删除当前资源",
            leftActionTitle: "确定",
            leftHandler: { (alertAction) in
                photoBrowser.deleteCurrentPreviewPhotoAsset()
                self.previewDidDeleteAsset(
                    index: index
                )
            }, rightActionTitle: "取消") { (alertAction) in }
    } longPressHandler: { index, photoAsset, photoBrowser in
        if photoAsset.mediaSubType == .localLivePhoto ||
            photoAsset.mediaSubType == .livePhoto {
            return
        }
        print("未添加长按响应事件")
    }

导航栏上的关闭跟删除字体颜色可修改，背景色无法修改，请问应该修改那个配置才可以改掉这个背景色啊

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