To set status bar color with React Native, we call the StatusBar.setBarStyle and StatusBar.setBackgroundColor methods.

For instance, we write

import {StatusBar} from 'react-native';

class Comp extends Component {
  //...
  componentDidMount() {
    StatusBar.setBarStyle("light-content", true);
    StatusBar.setBackgroundColor("#0996AE");
  }
  //...
}

to call StatusBar.setBarStyle to set the light-content option to true to make the content color light.

And we call StatusBar.setBackgroundColor to set the background color.