ReactDynamicPropertySet.js

import React from 'react';
import { StyleSheet, Text, View } from 'react-native';

export default class App extends React.Component {


    getGreenText = () => {
        return (<ColorText text="Default text" color="green"/>);
    }

    render() {

        const GreenText = this.getGreenText();
        GreenText.text = "I am green text";


        return (
            <View style={styles.container}>
                <ColorText color="red" text="I am red text"/>
                {GreenText}
            </View>
        );
    }
}

class ColorText extends React.Component{
    render(){
        return (<Text style={{color:this.props.color}}>{this.props.text}</Text>);
    }
}

const styles = StyleSheet.create({
    container: {
        flex: 1,
        alignItems: 'center',
        justifyContent: 'center',
    },
});