No way to customize ink-bar. Especially the height

[bigomega]

  // ink-bar.js

    var styles = this.mergeAndPrefix({
      left: this.props.left,
      width: this.props.width,
      bottom: '0',
      display: 'block',
      backgroundColor: this.getTheme().accent1Color,
      height: '2px', // This is fixed and no way to override :(
      marginTop: '-2px',
      position: 'relative',
      transition: Transitions.easeOut('1s', 'left')
    });
    return React.createElement(
      'div',
      { style: styles },
      ' '
    );

[hai-cea]

Thanks @bigomega - dupe of #701