customheader.js

class HomeScreen extends React.Component {
    static navigationOptions = {
      title: 'Home',
      headerStyle: {
        backgroundColor: '#f32356',
      },
      headerTintColor: '#000',
      headerTitleStyle: {
        fontWeight: 'bold',
      },
    };
  
  }
  
  class DetailsScreen extends React.Component {
    static navigationOptions = {
      title: 'Details',
      headerStyle: {
        backgroundColor: '#f4511e',
      },
      headerTintColor: '#fff',
      headerTitleStyle: {
        fontWeight: 'bold',
      },
    };

  }