rootstrap/react-native-use-styles

import { GlobalStyles } from 'react-native-use-styles';

GlobalStyles({
  constants: {
    midnight: '#2c3e50',
    clouds: '#ecf0f1',
    disabled: '#7f7f7f',
    title: 40,
  },
  container: 'bg:color:$midnight fx:1 jf:content:center',
});