JSPM

import React from 'react';
import { View } from 'react-native';
import ColorPicker from 'react-native-material-color-picker';

export default class SliderColorPickerExample extends React.Component {
    constructor(props) {
        super(props);
        this.state = { oldColor: '#dd2c00' };
    }

    componentDidMount() {
        setTimeout(() => this.setState({ oldColor: '#fdd835' }), 1000);
    }

    changeColor = colorRgb => this.setState({ oldColor: colorRgb })

    render() {
        return (
            <View style={{flex: 1, alignItems: 'center'}}>
                <ColorPicker
                    ref={view => {this.colorPicker = view;}}
                    oldColor={this.state.oldColor}
                    onColorChange={this.changeColor}/>
            </View>
        );
    }
}