Exemplo de um componente React com o componente react-color(ColorPicker)

Colorpicker.js

import React from "react"
import PropTypes from "prop-types"

import { SketchPicker } from "react-color"

class Colorpicker extends React.Component {

  constructor(props) {
    super(props);

    this.state = { selector: props.selector };

    this.handleChange = this.handleChange.bind(this);
  }

  handleChange = (color) => {
    document.body.style.background = color.hex;
    let elem = document.querySelector('#'+this.state.selector)

    elem.value = color.hex;
  }

  render() {
    return (<React.Fragment>
              <SketchPicker color={this.props.color}
                            onChange={this.handleChange}
              />
           </React.Fragment>
    );
  }
}

Colorpicker.propTypes = {
  
};

export default Colorpicker