React Props for style

gistfile1.js

var style = {
  myDiv: {
    backgroundColor: 'red',
  }
}

class Child extends React.Component {
  render() {
    return <div style={_.extend({}, style.myDiv, this.props.style, {color: 'blue'})} />
  }
}
Child.propTypes = {
  style: React.PropTypes.object,
}
Child.defaultProps = {
  style: {},
}

class Parent extends React.Component {
  render() {
      return <Child
        style={fontSize: 20}
      />
  }  
}