How to change the appBar back button color

Question

I cannot figure out how to change the appBar\'s automatic back button to a different color. it\'s under a scaffold and I\'ve tried to research it but I can\'t wrap my head aroun

Answer 1

To change the leading color for CupertinoPageScaffold

Theme(
  data: Theme.of(context).copyWith(
    cupertinoOverrideTheme: CupertinoThemeData(
      scaffoldBackgroundColor: Colors.white70,
      primaryColor: Styles.green21D877, // HERE COLOR OF LEADING
    ),
  ),
  child: CupertinoPageScaffold(
    navigationBar: CupertinoNavigationBar(
      brightness: Brightness.light,
      backgroundColor: Colors.white,
      middle: Text('Cupertino App Bar'),
    ),
    child: Container(
      child: Center(
        child: CupertinoActivityIndicator(),
      ),
    ),
  ),
)