Native Banner Ads and Banner Ads background or Title color is not change.

[aakashch0179]

Native Banner Ads And Banner Ads Background Color Error

In my app Native Banner Ads can not change the background color white and Banner Ads throw the background color black
how can fix this issue pls help.

NativeAd(
        placementId: "3025685484414127_3025692344413441",
        adType: NativeAdType.NATIVE_BANNER_AD,
        bannerAdSize: NativeBannerAdSize.HEIGHT_100,
        width: double.infinity,
        height: MediaQuery.of(context).size.height * 0.12,
        backgroundColor: Colors.white,
        titleColor: Colors.black,
        descriptionColor: Colors.grey,
        buttonColor: Colors.blueAccent,
        buttonTitleColor: Colors.white,
        buttonBorderColor: Colors.white,
        listener: NativeAdListener(
          onError: (code, message) =>
              print('native banner ad error\ncode: $code\nmessage:$message'),
          onLoaded: () => print('native banner ad loaded'),
          onMediaDownloaded: () => 'native banner ad media downloaded',
        ),
      ),

How can I change this black background color to white and the white title color to black?