Unable to set icon button color

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Dart

Flutter

I am using a navigation bar with two buttons for both of them I have set the color as white but for one of them, the button is not changing and appears to be the same color as the navigation bar.
The icons.newspaper widget is causing the issue.

The buttons are working perfectly only problem is with color

My navigation bar widget :

class _bottomNavigationBarState extends State<bottomNavigationBar> {
  final navigationKey = GlobalKey<CurvedNavigationBarState>();
  int indexNavbar = 0;
  final screens = [OverViewScreen(), PageViewBuilder()];
  @override
  Widget build(BuildContext context) {
    return
        //  Container(
        //   color: Color.fromARGB(255, 55, 126, 185),
        //   child:
        SafeArea(
      top: false, //to prevent overlap in ios device with the bottom
      child: ClipRRect(
        child: Scaffold(
          extendBody: true, // to make it appear it below the navigationbar
          bottomNavigationBar: Theme(
            data: Theme.of(context)
                .copyWith(iconTheme: IconThemeData(color: Colors.white)),
            child: CurvedNavigationBar(
              color: Color.fromARGB(255, 55, 126, 185),
              buttonBackgroundColor: Color.fromARGB(255, 55, 126, 185),
              animationCurve: Curves.easeInOut,
              animationDuration: Duration(milliseconds: 300),
              key: navigationKey,
              onTap: (index) => setState(() => this.indexNavbar =
                  index), //on tap will cause us to change the index
              index: indexNavbar,
              height: 60,
              items: [
                Icon(
                  Icons.newspaper,
                  size: 30,
                  color: Colors.white,
                ),
                Icon(
                  Icons.video_library,
                  size: 30,
                  color: Colors.white,
                )
              ],
              backgroundColor: Colors.transparent,
            ),
          ),
          body: screens[indexNavbar],
        ),
      ),
    );
  }
}

What I have tried:

I tried wrapping it with the theme widget but that is not doing the trick. I also gave it color separately