CMB2 + Customizer

cmb2-customizer.php

add_action( 'cmb2_init', function() {
    $cmb = new_cmb2_box( array(
        'id'            => 'address',
        'title'         => __( 'My Address', 'cmb2' ),
        'object_types'  => 'customizer', // Post type
        'context'       => 'normal',
        'priority'      => 800,
        'show_names'    => true, // Show field names on the left
    ) );
    // Regular text field
    $cmb->add_field( array(
        'name'       => __( 'Street Address', 'cmb2' ),
        'desc'       => __( 'field description (optional)', 'cmb2' ),
        'id'         => 'cmb_street_address',
        'type'       => 'text',
    ) );
    // Regular text field
    $cmb->add_field( array(
        'name'       => __( 'File', 'cmb2' ),
        'desc'       => __( 'field description (optional)', 'cmb2' ),
        'id'         => 'cmb_file_1',
        'type'       => 'file',
    ) );
    // Regular text field
    $cmb->add_field( array(
        'name'       => __( 'Text URL', 'cmb2' ),
        'desc'       => __( 'field description (optional)', 'cmb2' ),
        'id'         => 'cmb_text_url',
        'type'       => 'text_url',
    ) );
     // Regular text field
    $cmb->add_field( array(
        'name'       => __( 'Text File', 'cmb2' ),
        'desc'       => __( 'field description (optional)', 'cmb2' ),
        'id'         => 'cmb_file_2',
        'type'       => 'file',
    ) );
    // Regular text field
    $cmb->add_field( array(
        'name'       => __( 'Color', 'cmb2' ),
        'desc'       => __( 'field description (optional)', 'cmb2' ),
        'id'         => 'cmb_color',
        'type'       => 'colorpicker',
    ) );
} );